Railway Signaling | C

NOTE:

Although all of these digitized articles are 60 or more years old, and likely have minimal commercial value today, the reader should bear in mind that material dated after 1923 remains under copyright by Simmons-Boardman Publishing.

These articles and the information contained therein may be freely reproduced or used in printed or electronic form for non-commercial or educational purposes, provided the copyright holder and original author (if known) are acknowledged, and provided that such publication also refers readers to the original document on this site.

Simply making interesting material available to those who share my interest in the railway signal systems of the past has been my sole objective in this long project.

Learn more about this collection.

"CY" Tower, WV 1

1965	B&O would have used radio orders 565.5 KB

C. K. Switch, ND 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

CA Jct., MO 2

1960	News briefs. 1960-03 1.9 MB
1962	News briefs. 1962-02 1.4 MB

cab signaling 54

1965	AFO circuits can be used in subways 676.7 KB
1947	All-Relay Interlockings On the RF&P 1.3 MB
1947	Annual Review and Outlook 425.1 KB
1940	ATC Tests Ordered 676.8 KB
1936	Bad Collisions on Best Railroads 2.5 MB
1919	Block Signaling Practice on a British Railway (Part 3) 337.3 KB
1951	Cab signal system 455.8 KB
1936	Cab Signaling 7.8 MB
1939	Cab Signaling and Train Control On the San Francisco-Oakland Bay Bridge 7.2 MB
1958	Central opens Young Yard 2.5 MB
1928	Co-ordinating Cab and Wayside Signaling 1.6 MB
1944	Coded Track Circuits for CTC and Cab Signaling 4.0 MB
1936	Demands for Modern Signaling 12.1 MB
1964	Eight cities test automatic train operation 1.1 MB
1922	Final Train Control Order Issued by ICC 417.4 KB
1960	Gangs do signal maintenance 309.7 KB
1944	ICC Annual Signaling Statistics 6.6 MB
1947	ICC Holds Signal Hearing 507.5 KB
1949	ICC Issues Statistics 850.7 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1947	ICC Signal Hearings 179.7 KB
1940	Illinois Central Order 1.3 MB
1936	Importance of Warning Whistle 6.8 MB
1960	Iran railways have simplified ATC 380.5 KB
1935	Letter to the Editor: Use of Cab Signals 1.2 MB
1954	Modern Signaling in New Subways in Stockholm, Sweden 6.7 MB
1959	Monorail is signaled electronically 573.9 KB
1951	More Signal Construction in 1950 1.0 MB
1950	New Rules, Standards and Instructions Issued by the Interstate Commerce Commission 7.9 MB
1954	New Wayside and Cab Signaling 753.2 KB
1960	News briefs. 1960-05 1.0 MB
1961	News briefs. 1961-12 978.0 KB
1962	News briefs. 1962-06 989.1 KB
1964	News briefs. 1964-09 879.4 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-02 1.9 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-08 749.4 KB
1965	News briefs. 1965-11 1.2 MB
1966	News briefs. 1966-01 1.4 MB
1935	Obsolescence in Signaling 3.4 MB
1951	Pennsylvania Exhibits Speed Control 512.5 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1944	Rock Island Installs Cab Signaling and Centralized Traffic Control 10.0 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB
1950	Rules, Standards and Instructions 1.5 MB
1939	San Francisco-Oakland Bay Bridge Interlocking Plants 9.4 MB
1939	San Francisco-Oakland Bay Bridge Signaling and Interlocking 7.9 MB
1949	Santa Fe Gets Some Relief from ICC Signaling Order 2.2 MB
1950	Signaling and Rules 1.4 MB
1933	Signaling Construction During 1932 632.3 KB
1952	Speed Control Installed on the Long Island 1.3 MB
1939	Speeding Up Train Operation With Signaling 4.5 MB

cab signals 13

1964	Automatic identity systems proposed 736.1 KB
1935	Cab Signals and ATC on UP Streamliner 2.1 MB
1959	Chicago & North Western Has Unique Hump Cab Signal Controls 2.2 MB
1955	CTC and cab signaling on Union Pacific 789.5 KB
1909	First Annual Report of the Block Signal and Train Control Board to the Interstate Commerce Commission 4.0 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-09 381.8 KB
1955	Pennsylvania installs wayside equipment for cab signaling 745.7 KB
1935	Pole Lines for Automatic Signaling 1.6 MB
1937	Report of Committee X – Signaling Practice 2.9 MB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB
1947	Signaling Order Issued by ICC 533.4 KB
1947	Territories Involved in the ICC Signaling Order 388.2 KB

Cabin Creek, WV 1

1963	News briefs. 1963-03 790.6 KB

cabin interlocking 1

1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

cabin interlockings 1

1923	Cabin Interlockings for Crossings 1.5 MB

cable 1

1961	Single Cable System Proposed for Signal and Communications Circuits 808.3 KB

Cadorna, Quebec 1

1922	News of the Month. 1922-09 562.2 KB

Cadosia, NY 1

1940	CTC on the New York, Ontario & Western 8.2 MB

Cadweld 1

1940	Cadweld (Thermex) Signal Bonds 996.4 KB

Cairo, IL 2

1915	Electric Interlocking at Davis, Illinois 241.3 KB
1937	Ohio Flood Damages Signaling 9.7 MB

Caldwell, KS 1

1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB

Calera, AL 2

1962	News briefs. 1962-04 1.2 MB
1962	News briefs. 1962-10 461.7 KB

Calgary, Alberta 2

1958	CP consolidates interlockings 2.0 MB
1964	News briefs. 1964-10 768.6 KB

Calhoun, AL 2

1964	News briefs. 1964-08 811.5 KB
1965	News briefs. 1965-05 1.4 MB

Caliente, CA 1

1949	625 Miles of CTC in one Stretch 7.9 MB

California 1

1931	State Commission Formulates Requirements of Automatic Interlockers 2.3 MB

California Public Utilities Commission 2

1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-10 768.6 KB

call-on signals 14

1947	All-Relay Interlockings On the RF&P 1.3 MB
1955	At Portland Terminal, combined interlocking 810.6 KB
1958	CN consolidates interlockings 2.1 MB
1958	CP consolidates interlockings 2.0 MB
1942	CTC Saves Train Time on a Section of the Southern Pacific 829.6 KB
1944	CTC Speeds Ore Traffic On the DM&IR 4.6 MB
1927	Design a Circuit to Obtain the Desired Operation of the Call-On Arms 602.2 KB
1957	How long sidings save train time 465.2 KB
1951	Modern Interlocking on the Norfolk & Western 710.2 KB
1946	More Difficult to Get a Call-On Signal 488.8 KB
1951	P&LE Rebuilds Interlocking 957.2 KB
1956	Remote Control Converted to CTC 6.6 MB
1952	Soo Line Completes Signaling on 260 Miles of Single Track 737.7 KB
1958	Subway consolidates interlockings 2.2 MB

Calmar, IA 1

1938	Highway Crossing Protection and Spring Switch on Milwaukee 3.2 MB

Calumet River 1

1947	Drawbridge Interlocking on the Elgin, Joliet & Eastern 647.3 KB

Calwa, CA 1

1922	Signal Construction on the Santa Fe 797.6 KB

Camak, GA 1

1947	Automatic Block With Spring Switches installed on the Georgia Railroad 851.4 KB

Camden Station, Baltimore, MD 2

1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB
1960	News briefs. 1960-01 1.1 MB

Camden Town, England 1

1958	Programmed interlocking control 337.6 KB

Camden, NJ 3

1937	Delaware River Bridge Signaling 13.9 MB
1924	New Reading Interlocking at Camden 3.4 MB
1965	News briefs. 1965-01 2.0 MB

Cameron, CA 1

1960	News briefs. 1960-07 845.4 KB

Cameron, PA 1

1925	Relieving Congestion by Signals 2.5 MB

Camp Douglas, WI 2

1964	News briefs. 1964-10 768.6 KB
1931	Report on Milwaukee-Omaha Collision 1.5 MB

Campbell, IL 1

1930	Remotely Controlled Signals Replace Manual Block Station on New York Central 1.2 MB

Campville, NY 1

1958	DL&W-Erie joint operation is ready to go 643.6 KB

Camrose, Alberta 1

1922	News of the Month. 1922-09 562.2 KB

Canada 1

1911	A Comparison of the Interlocking Laws of the Various States 2.6 MB

Canadian National 71

1953	Canadian National Adapts CTC to Traffic of 12 Trains Daily 7.5 MB
1943	Canadian National Installs a Large All-Relay Electric Interlocking 8.8 MB
1951	Canadian National Installs Centralized Traffic Control On a 117-Mile Sub-Division 501.4 KB
1944	Canadian National installs new type of all-relay interlocking at Montreal 7.0 MB
1938	Changing Relays 1.7 MB
1927	Checking Up on Signal Observance 774.5 KB
1947	Choice of Interlocking Control Machines 266.5 KB
1958	CN consolidates interlockings 2.1 MB
1956	CN Telegraph Moves Into Its New Home 8.1 MB
1960	CNR opens Moncton yard 760.9 KB
1960	CNR uses speed selection for gates 980.7 KB
1962	Computer Simulation of CTC 220.3 KB
1944	CTC On 185 Miles on Canadian National 12.3 MB
1950	DC Track Circuit Trouble 1.6 MB
1934	Desk-Lever Interlocking Installed on Canadian National 1.2 MB
1927	Electric Locking Protection at Interlockers Operated Without Derails 1.1 MB
1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB
1933	Four-Position Dwarfs 1.5 MB
1955	How CN increased track capacity 516.4 KB
1935	Installation of Bond Wires 4.0 MB
1953	Location of Signal Heads 624.7 KB
1957	More automation for signaling in 1957 1.2 MB
1955	News briefs. 1955-08 830.4 KB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-11 875.5 KB
1961	News briefs. 1961-02 1.4 MB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-11 1.3 MB
1962	News briefs. 1962-01 986.8 KB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-07 494.2 KB
1962	News briefs. 1962-09 838.3 KB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-05 720.2 KB
1963	News briefs. 1963-06 961.3 KB
1964	News briefs. 1964-01 535.9 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-06 812.0 KB
1965	News briefs. 1965-04 1.5 MB
1965	News briefs. 1965-10 1.1 MB
1966	News briefs. 1966-01 1.4 MB
1922	News of the Month. 1922-08 394.0 KB
1922	News of the Month. 1922-09 562.2 KB
1958	Nine layouts in one interlocking 1.7 MB
1953	One Control Machine for Interlocked Yard Area 4.2 MB
1927	Organization of Railroad Signal Departments 3.9 MB
1935	Preventing Unnecessary Operation of Highway-Railroad Crossing Signals 4.3 MB
1931	Proceed Aspects for Isolated Home Signals 1.4 MB
1959	Pushbutton console for CTC 785.3 KB
1937	Replacement and Life of Lamps 3.0 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1957	Seaway diverts CN mainline 532.3 KB
1937	Shunt Sensitivity and Broken Rail Protection 4.3 MB
1934	Signal Aspects at an Automatic Interlocking Plant 1.2 MB
1963	Signal changes make transit run on railroad 1.1 MB
1960	Signal construction steady in 1959 385.2 KB
1959	Signaling moderate during '58 528.6 KB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1962	Toronto Railway Conference – Automatic Train Operation 448.4 KB
1932	Track Model Lights 444.9 KB
1961	Traffic Signal Control 277.2 KB
1964	What CTC Can Do For You 417.8 KB
1965	What's the Answer? 1965-07 629.7 KB
1960	What's the answer? AC track circuits 281.9 KB
1958	What's the answer? Approach lighting 237.1 KB
1957	Why not more Centralized Traffic Control? 344.2 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Canadian Northern 1

1915	A Half-Interlocking Plant on the Canadian Northern 1.6 MB

Canadian Pacific 59

1949	A Mile-Stone In Signaling 1.2 MB
1937	Approach Locking on Dwarf Signals 1.2 MB
1922	Automatic Train Control in Use On American Railroads 353.7 KB
1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB
1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB
1944	Canadian Pacific Installs Centralized Traffic Control 4.4 MB
1950	Centralized Train Dispatching 1.4 MB
1938	Changing Relays 1.7 MB
1927	Checking Up on Signal Observance 774.5 KB
1936	Cleaning Mechanical Locking Bars 1.5 MB
1960	Computer analyzes train operation 1.2 MB
1959	Computer simulates train operation 524.0 KB
1939	Controlling Four-Aspect Automatics 1.6 MB
1958	CP consolidates interlockings 2.0 MB
1931	Economy of Smaller Towers 539.7 KB
1915	Electric Train Staff Installation 3.3 MB
1935	False Operation of Crossing Signals 3.3 MB
1964	Gate Control is by GCPs 1.4 MB
1938	Light Signals as Train Order Signals 731.0 KB
1953	Location of Signal Heads 624.7 KB
1936	Maintainers' Blueprint Plans 4.2 MB
1927	Mechanical Interlocker on the Canadian Pacific 1.0 MB
1935	Mechanical Plant Replaced by Electric Interlocking 7.2 MB
1946	More Difficult to Get a Call-On Signal 488.8 KB
1951	More Signal Construction in 1950 1.0 MB
1936	Motor Car Indicators 2.9 MB
1955	Much is new in signaling for 1955 826.7 KB
1961	News briefs. 1961-03 1.0 MB
1961	News briefs. 1961-04 1.5 MB
1962	News briefs. 1962-05 826.8 KB
1962	News briefs. 1962-06 989.1 KB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-05 720.2 KB
1963	News briefs. 1963-06 961.3 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-04 1.5 MB
1958	Nine layouts in one interlocking 1.7 MB
1927	Organization of Railroad Signal Departments 3.9 MB
1933	Preventing Lamp Failures 1.2 MB
1935	Preventing Unnecessary Operation of Highway-Railroad Crossing Signals 4.3 MB
1959	Pushbutton console for CTC 785.3 KB
1934	Remote Control Replaces Mechanical Interlocking on Canadian Pacific 1.9 MB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1957	Seaway diverts CN mainline 532.3 KB
1933	Shortening Masts 879.8 KB
1930	Signal Aspects for a Four Block System 2.8 MB
1937	Signaling at Lap Sidings 2.6 MB
1961	Snow Detectors 231.2 KB
1957	Survey shows progress in signal education 330.6 KB
1937	Switch Indicators Serve as Interlocking Control Devices 5.6 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1933	Testing Lamps on Approach Control 698.7 KB
1934	The Highway Crossing Signal Circuit Problem 1.7 MB
1935	Trap Circuits at Railroad Crossings 4.6 MB
1936	Yard Entrance in Montreal Remotely Controlled 8.2 MB

Canadian, TX 1

1947	CTC Has Long Sidings With Signals on the Santa Fe 2.1 MB

Canby, WA 2

1947	ICC Holds Signal Hearing 507.5 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Canyon, TX 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

capacity 5

1933	Economics of Modern Signaling 2.1 MB
1956	How to Get Maximum Capacity of Single Track 10.5 MB
1935	Multiple-Block Signaling 7.0 MB
1964	What CTC Can Do For You 417.8 KB
1936	What Is the Capacity of a Single-Track Line? 2.0 MB

capacity analyzer 1

1964	What CTC Can Do For You 417.8 KB

Cape Horn, WA 1

1947	Signals and Slide Fences on the Spokane, Portland & Seattle 1.8 MB

Capital Traction 1

1909	Electric interlocking at C St. and Delaware Ave., Washington, DC 1.4 MB

Capreol, Ontario 2

1963	News briefs. 1963-03 790.6 KB
1959	Pushbutton console for CTC 785.3 KB

car checking 1

1963	S&C Role Is Basic To Bison Yard 3.0 MB

car identification 1

1963	Solid State Devices 938.4 KB

car number recorder 1

1948	Car Numbers “Grabbed” by Voice Recorder 783.1 KB

car retarders 5

1949	A Mile-Stone In Signaling 1.2 MB
1926	Electro-Pneumatic Car Retarders in Service on Illinois Central 3.8 MB
1954	General Railway Signal Company Enters Fiftieth Year 1.6 MB
1955	Much is new in signaling for 1955 826.7 KB
1937	What is in Store for the Signal Field? 1.8 MB

Car-Fax 1

1959	C&NW has system-wide car reporting 702.6 KB

Carbon Cliff, IL 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Carbondale, IL 6

1938	Accident Involving Rule 93 1.5 MB
1960	News briefs. 1960-10 1.8 MB
1961	News briefs. 1961-11 1.3 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-07 494.2 KB
1963	News briefs. 1963-11 1.4 MB

Carbondale, PA 4

1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-06 1.2 MB

Carlinville, IL 1

1911	Signaling on the Illinois Traction System 1.5 MB

Carlisle Jct., PA 1

1963	News briefs. 1963-12 429.2 KB

Carlton, MN 1

1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Carman Jct., Manitoba 1

1963	News briefs. 1963-05 720.2 KB

Carmen, FL 1

1962	News briefs. 1962-09 838.3 KB

Carol Lake 1

1962	1962 outlook 3.0 MB

Carolina & Western Carolina 1

1947	Territories Involved in the ICC Signaling Order 388.2 KB

Carpenter Street, Chicago, IL 3

1911	Interlocking on the North Western Terminal 7.6 MB
1925	Maintenance on C&NW Terminals 12.5 MB
1911	Signaling and Interlocking on the North Western Terminal in Chicago 1.1 MB

Carrcroft, DE 1

1961	Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB

carrier code 1

1965	Merging divisions require changing circuits 335.5 KB

carrier communication 5

1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB
1960	Long-distance hot box detection 861.0 KB
1960	News briefs. 1960-01 1.1 MB
1959	Now: Instant hotbox location 829.3 KB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB

carrier control 8

1949	625 Miles of CTC in one Stretch 7.9 MB
1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1947	Frisco Moves CTC to One Office 481.1 KB
1950	Increasing Use of Carrier 1.3 MB
1955	Santa Fe installs CTC on single track 610.2 KB
1951	Signal Modernization Program on the RF&P 1.0 MB
1958	Subway consolidates interlockings 2.2 MB
1955	What CTC did for the Dixie Line 889.8 KB

carrier control system 1

1962	Centralization – Dispatch Circuits Are Changing 1.3 MB

carrior control 1

1960	News briefs. 1960-06 1.2 MB

Carroll, IA 3

1958	Crossing protection program saves 59% 553.4 KB
1960	Crossings are safer after 10 years 454.4 KB
1951	Special Protection Problems Solved With Gates and Flashers 1.5 MB

Carrollton Jct., LA 1

1954	New Orleans Passenger Terminal 4.7 MB

Carson, OH 1

1960	News briefs. 1960-09 756.9 KB

Carthage Jct., IL 1

1956	Burlington Has Modified CTC for Medium Traffic Single-Track 7.2 MB

Cascade Tunnel, WA 1

1963	GN Radio Works in Tunnel 1.1 MB

Casey, IL 1

1940	Pennsylvania Installs Centralized Traffic Control On 69 Miles of Line 13.1 MB

Castle Rock, WA 1

1966	News briefs. 1966-01 1.4 MB

Castleberry, AL 1

1965	News briefs. 1965-05 1.4 MB

Catamount, New Brunswick 1

1944	CTC On 185 Miles on Canadian National 12.3 MB

Cathay, ND 1

1964	News briefs. 1964-08 811.5 KB

cathode ray tubes 1

1964	Train Describers: A step toward ATI 2.1 MB

Cayuga, IN 1

1962	News briefs. 1962-06 989.1 KB

CD code-following relays 1

1940	Plug Couplers for Relays and Signals 1.3 MB

Cedar Falls, IA 1

1933	Automatic Interlocking in Train Control Territory 2.3 MB

Cedar Hill, CT 2

1948	Car Numbers “Grabbed” by Voice Recorder 783.1 KB
1915	Extension of New Haven signals 684.8 KB

Cedar Point, KS 1

1922	Signal Construction on the Santa Fe 797.6 KB

Center Hill, FL 1

1963	News briefs. 1963-11 1.4 MB

center sidings 1

1956	Remote Control Converted to CTC 6.6 MB

Central Argentine 1

1922	Interlockings in Argentine Terminal 473.1 KB

Central Jct., GA 2

1964	News briefs. 1964-10 768.6 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Central Lakes, MN 1

1922	News of the Month. 1922-09 562.2 KB

Central New England 1

1926	The Direction of Train Movements by Signal Indication Without Written Train Orders 829.5 KB

Central of Argentine 1

1922	Locking Arrangement for Movable Point Crossing Frogs 527.0 KB

Central of Georgia 19

1946	Automatic Block With Spring Switches on the Central of Georgia 5.3 MB
1933	Automatic Operation 963.8 KB
1945	Collision Entering CTC Line Due to Inadequate Signal 557.7 KB
1928	Continued Activity and Development in Signaling 1.1 MB
1932	CTC Studies 977.5 KB
1950	Differentiation Between Signals 955.8 KB
1937	False Clear Failures 2.0 MB
1950	Grade Signal Controls 2.1 MB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-04 896.6 KB
1961	News briefs. 1961-11 1.3 MB
1964	News briefs. 1964-06 812.0 KB
1965	News briefs. 1965-10 1.1 MB
1960	Short track circuit causes accident 436.0 KB
1959	Signaling moderate during '58 528.6 KB
1927	Signals Eliminate Written Train Orders 512.8 KB
1950	Spring Switch Signaling 2.5 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1927	Train Operation Without Written Train Orders 3.3 MB

Central of New Jersey 21

1951	A History of Flashing-Light Crossing Signals- What They Are and Why 570.5 KB
1928	Arrangement of Color Light Units 816.2 KB
1931	Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey 3.0 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1927	CNJ Completes Interlocking to Safeguard Newark Bay Bridge 4.4 MB
1937	Cut-Out Control for Crossing Signals 3.0 MB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1937	J. C. Mock Retires 1.4 MB
1915	Jersey City Terminal Interlocking 1.1 MB
1931	Light-Out Protection 1.0 MB
1922	New Interlocking on the CRR of NJ 734.1 KB
1964	News briefs. 1964-12 981.5 KB
1922	News of the Month. 1922-05 426.4 KB
1941	Non-Stop Permissive Signals 2.8 MB
1937	Phantom Indications of Dwarfs 1.3 MB
1921	Progress of Railroad Signaling in America 731.8 KB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1960	Signal construction steady in 1959 385.2 KB
1926	Train Control Progress in 1925 3.1 MB
1928	What Is to Be Gained by Train Stop or Train Control? 463.8 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Central Station, Chicago, IL 1

1943	Electric Interlocking Installed On IC 12.8 MB

Central Vermont 3

1963	News briefs. 1963-10 497.4 KB
1957	Two interlockings save time and money 547.8 KB
1915	Victoria Jubilee Bridge Protection 570.0 KB

Centralia, IL 2

1956	Centralia Has Protection of All Crossings 6.7 MB
1960	Crossings are safer after 10 years 454.4 KB

centralized dispatching 1

1964	What CTC Can Do For You 417.8 KB

centralized traffic control 382

1960	Fourteen RRs adopt new operating code 945.4 KB
1947	107 Miles of CTC on the N&W 2.3 MB
1962	1962 outlook 3.0 MB
1949	40-Hour Week Means More Signaling 1.1 MB
1949	625 Miles of CTC in one Stretch 7.9 MB
1940	A Change in the Requisites, Definitions and Regulations 1.2 MB
1931	A Definition for Centralized Traffic Control 1.3 MB
1940	A Review of 1939 and a Glance Into 1940 1.6 MB
1941	A Review of 1940 and Prospects for the Future 1.3 MB
1943	A Review of 1942 2.9 MB
1959	AFO circuits protect crossing 554.0 KB
1949	An Unusual Automatic Plant 4.5 MB
1947	Annual Review and Outlook 425.1 KB
1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB
1950	Approach Distances and Times 5.5 MB
1943	Approach or Time Locking 897.5 KB
1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1962	Automatic Dispatching 2.1 MB
1933	Automatic Dwarfs? 717.9 KB
1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1959	B&M takes up track and installs traffic control, gates and flashers 745.0 KB
1957	BAR takes up second track and installs CTC 706.6 KB
1957	Bessemer takes up second track and installs Centralized Traffic Control 706.4 KB
1936	Boston & Maine Flooded Signaling Rehabilitated 8.3 MB
1951	Both Tracks Both Ways on Norfolk & Western 623.5 KB
1955	Both ways on both tracks with CTC 765.0 KB
1961	Brazilian Automated CTC Will Make Meets 1.2 MB
1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB
1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB
1956	Burlington Has Modified CTC for Medium Traffic Single-Track 7.2 MB
1959	Burlington installs modified CTC 1.0 MB
1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1955	C&O Consolidates Interlockings 3.2 MB
1958	C&O Has Good Ideas in CTC 2.5 MB
1936	C&O Remote Control 12.8 MB
1951	Canadian National Installs Centralized Traffic Control On a 117-Mile Sub-Division 501.4 KB
1944	Canadian Pacific Installs Centralized Traffic Control 4.4 MB
1958	Carrier sends hot box indications to dispatchers' office 810.6 KB
1946	Catch Up With Progress 450.6 KB
1958	Central opens Young Yard 2.5 MB
1962	Centralization – Dispatch Circuits Are Changing 1.3 MB
1932	Centralized Traffic Control 3.1 MB
1933	Centralized Traffic Control and Remote Control 575.8 KB
1930	Centralized Traffic Control Indications 1.1 MB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1943	Centralized Traffic Control Installed On 64.6 Miles of the Seaboard 7.1 MB
1941	Centralized Traffic Control Installed on the Missouri Pacific 3.7 MB
1935	Centralized Traffic Control Installed on the Pittsburgh & Lake Erie 12.9 MB
1943	Centralized Traffic Control Installed on the Virginian 7.0 MB
1935	Centralized Traffic Control on the Chesapeake & Ohio 6.2 MB
1936	Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB
1942	Centralized Traffic Control on the Erie 464.3 KB
1943	Centralized Traffic Control on the Milwaukee 2.8 MB
1931	Centralized Traffic Control on the Peoria & Pekin Union 6.7 MB
1935	Centralized Traffic Control on the Texas & Pacific 5.1 MB
1931	Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey 3.0 MB
1940	Centralized Traffic Control Solves Problem on the Norfolk & Western 7.5 MB
1943	Centralized Traffic Control Speeds War Traffic on 80.5-Mile Section of the Southern Pacific 10.3 MB
1950	Centralized Train Dispatching 1.4 MB
1931	Centralized vs. Remote Control 1.2 MB
1943	Change-Over Circuits 739.0 KB
1949	Coast Line Replaces Signaling On Engine District 8.1 MB
1944	Coded Track Circuits for CTC and Cab Signaling 4.0 MB
1958	Compact control center 226.9 KB
1960	Computer analyzes train operation 1.2 MB
1962	Computer Simulation of CTC 220.3 KB
1950	Consolidated Control of Interlockings 1.3 MB
1947	Construction of Towers 213.3 KB
1944	Continuity of CTC Operation 943.3 KB
1943	Continuously Coded Local Line Wire Signal Control Circuits 4.5 MB
1962	Control Panels 243.4 KB
1958	CP consolidates interlockings 2.0 MB
1939	CTC and Automatic Signals on the Rock Island 6.6 MB
1955	CTC and cab signaling on Union Pacific 789.5 KB
1950	CTC Code Lines 1.1 MB
1959	CTC discussed at AIEE meeting 445.2 KB
1947	CTC Down by the Ohio 2.7 MB
1950	CTC Extended on the Rio Grande 4.4 MB
1947	CTC Extension on the Boston & Maine 792.3 KB
1958	CTC Handles 15 More Trains 2.2 MB
1947	CTC Has Long Sidings With Signals on the Santa Fe 2.1 MB
1954	CTC Improves Train Operation 3.3 MB
1937	CTC in Coaling Station Territory 6.6 MB
1954	CTC Increases Capacity of Double Track 4.2 MB
1949	CTC Increases Capacity of Single-Track Freight Line Handling Heavy Traffic 6.1 MB
1950	CTC Indication Code 1.2 MB
1950	CTC Installed on 128 Miles of NKP 12.1 MB
1941	CTC Installed on Norfolk & Western 5.1 MB
1954	CTC into Service 2.5 MB
1953	CTC Keeps Trains Moving on Long Grades 6.3 MB
1948	CTC Keeps ‘em Rollin’ on C&EI 2.1 MB
1956	CTC Locking 2.2 MB
1952	CTC Machine Hangs High But Trains Run 704.9 KB
1954	CTC Moves Heavy Trains 4.1 MB
1955	CTC moves trains on grades 762.8 KB
1946	CTC on 107 Miles of Single Track on the Louisville & Nashville 5.2 MB
1943	CTC on 107 Miles of Single-Track on the Rio Grande 9.7 MB
1946	CTC on 128 Miles of Denver & Salt Lake 10.1 MB
1944	CTC On 185 Miles on Canadian National 12.3 MB
1939	CTC on Multiple Track 1.8 MB
1955	CTC on single and double track 406.8 KB
1951	CTC on Single Track Permits Removal of Second Main on 22.4 Miles on Boston & Maine 924.4 KB
1950	CTC on Sunset Route 3.1 MB
1943	CTC on the Bessemer & Lake Erie 8.7 MB
1937	CTC On the Denver & Rio Grande Western 8.0 MB
1940	CTC on the New York, Ontario & Western 8.2 MB
1950	CTC on the Reading 6.6 MB
1957	CTC on the SP has special devices 518.8 KB
1950	CTC on the Wabash 2.6 MB
1946	CTC Over Automatic Block 443.6 KB
1952	CTC Pays Its Way on B&O 733.2 KB
1955	CTC reduces operating expenses 431.8 KB
1953	CTC Replaces Manual Block On Single Track 9.0 MB
1938	CTC Replaces Staff System on the Milwaukee 2.3 MB
1958	CTC saves time and money for the Louisville & Nashville 446.6 KB
1955	CTC Saves Time for Freights On 135 Miles of Single Track 4.0 MB
1942	CTC Saves Train Time on a Section of the Southern Pacific 829.6 KB
1947	CTC Saves Train Time on the Pennsylvania 1.5 MB
1960	CTC signals clear automatically 1.1 MB
1956	CTC Signs 1.8 MB
1945	CTC Solves Operating Problems On the Pere Marquette 4.3 MB
1944	CTC Speeds Ore Traffic On the DM&IR 4.6 MB
1931	CTC Without Power-Operated Switches 1.8 MB
1937	Delaware River Bridge Signaling 13.9 MB
1936	Demands for Modern Signaling 12.1 MB
1947	Developments in Signaling 498.7 KB
1961	Digital Computer Simulates CTC Dispatcher 2.8 MB
1937	Direct-Wire or Coded Circuits 1.3 MB
1928	Diversified Application of the Centralized Control System 493.5 KB
1962	DM&IR Consolidates CTC Control Miles 384.7 KB
1951	Double to Single Track 60 Miles on the Erie 1.1 MB
1956	Double to Single Track With CTC 7.4 MB
1951	Double Track to Single With CTC 197.9 KB
1952	Double-Track CTC on Illinois Central 759.7 KB
1949	Either-Direction Running on Two Tracks on the Norfolk & Western 5.5 MB
1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB
1944	Electronics In Signaling 709.8 KB
1957	Elevation causes signal changes 893.2 KB
1944	Emergency Release for Switch Lock 1.3 MB
1937	Ends of Double Track Controlled by CTC 12.4 MB
1959	Erie consolidates interlockings 440.6 KB
1950	Frisco Moves CTC Machines Without Interrupting Traffic 2.9 MB
1947	Frisco Moves CTC to One Office 481.1 KB
1960	From the field 945.2 KB
1960	Gangs do signal maintenance 309.7 KB
1954	General Railway Signal Company Enters Fiftieth Year 1.6 MB
1957	GN CTC's 175 miles of mainline 635.9 KB
1953	Grand Trunk Installs CTC on 37 Miles of Busy Single Track 3.5 MB
1949	Hold-Out Signals in CTC 1.0 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1955	How CN increased track capacity 516.4 KB
1964	How computers may be applied 1.2 MB
1960	How CTC affects D&H M/W work: Cuts costs 372.6 KB
1957	How long sidings save train time 465.2 KB
1947	How Low Is a Dwarf? 438.7 KB
1958	How to adapt CTC to your traffic 748.3 KB
1956	How to Get Maximum Capacity of Single Track 10.5 MB
1957	How to make non-stop meet with CTC 576.9 KB
1961	IC Puts CTC Through Swamp 1.6 MB
1946	ICC 50-MPH Signal Hearing 6.9 MB
1944	ICC Annual Signaling Statistics 6.6 MB
1961	ICC Reports on Railroad Safety 194.7 KB
1950	Increasing Use of Carrier 1.3 MB
1963	Interlocking: New Solid State Devices Save Money 2.1 MB
1943	Intermediate Signals in CTC 1.7 MB
1943	Junction and Crossing Included in Centralized Traffic Control On the Missouri Pacific 4.7 MB
1950	L&N Extends CTC on "EK" 10.4 MB
1944	L&N Installs CTC On an Engine District 9.0 MB
1960	Long-distance hot box detection 861.0 KB
1950	Longest Continuous Double-Track CTC Is on North Western 5.1 MB
1954	Loudspeakers and Interlocking Improve Yard Operation 4.7 MB
1956	Main Track Leaving Signal 2.2 MB
1947	Medals Awarded by Franklin Institute 236.3 KB
1965	Merging divisions require changing circuits 335.5 KB
1965	Midwest RRs fight the weather 914.4 KB
1960	Miniature track diagram 334.7 KB
1951	Modern Interlocking on the Norfolk & Western 710.2 KB
1949	Modern Signaling on a Division 6.6 MB
1950	Modern Signaling Systems On Western Pacific 16.1 MB
1957	More automation for signaling in 1957 1.2 MB
1951	More Signal Construction in 1950 1.0 MB
1958	MP consolidates CTC machines 797.2 KB
1964	MP interlocking uses solid-state control system 410.9 KB
1955	Much is new in signaling for 1955 826.7 KB
1944	N&W Installs CTC on Shenandoah Valley Line 10.2 MB
1944	Necessities or Frills in Centralized Traffic Control 1.0 MB
1950	New Rules, Standards and Instructions Issued by the Interstate Commerce Commission 7.9 MB
1946	New Signal Control Line Circuits in Centralized Traffic Control Territory on the Burlington 2.8 MB
1935	New Signaling on the Boston & Maine 9.9 MB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1955	New York Central’s CTC – It’s Four Tracks to Two 4.1 MB
1943	New York, Chicago & St. Louis Installs Centralized Traffic Control on Busy Sections of Single Track 7.9 MB
1958	News briefs. 1958-01 1.8 MB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-04 896.6 KB
1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-07 845.4 KB
1960	News briefs. 1960-08 603.8 KB
1960	News briefs. 1960-09 756.9 KB
1960	News briefs. 1960-10 1.8 MB
1960	News briefs. 1960-11 875.5 KB
1961	News briefs. 1961-01 761.9 KB
1961	News briefs. 1961-02 1.4 MB
1961	News briefs. 1961-03 1.0 MB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-05 1.1 MB
1961	News briefs. 1961-06 725.8 KB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-08 851.8 KB
1961	News briefs. 1961-09 886.8 KB
1961	News briefs. 1961-10 1.0 MB
1961	News briefs. 1961-11 1.3 MB
1961	News briefs. 1961-12 978.0 KB
1962	News briefs. 1962-01 986.8 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-03 1.1 MB
1962	News briefs. 1962-04 1.2 MB
1962	News briefs. 1962-05 826.8 KB
1962	News briefs. 1962-07 494.2 KB
1962	News briefs. 1962-09 838.3 KB
1962	News briefs. 1962-10 461.7 KB
1962	News briefs. 1962-11 468.1 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-02 1.3 MB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-04 896.6 KB
1963	News briefs. 1963-05 720.2 KB
1963	News briefs. 1963-06 961.3 KB
1963	News briefs. 1963-08 1.2 MB
1963	News briefs. 1963-10 497.4 KB
1963	News briefs. 1963-11 1.4 MB
1963	News briefs. 1963-12 429.2 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-05 1.0 MB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-08 811.5 KB
1964	News briefs. 1964-09 879.4 KB
1964	News briefs. 1964-10 768.6 KB
1964	News briefs. 1964-11 797.3 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-02 1.9 MB
1965	News briefs. 1965-04 1.5 MB
1965	News briefs. 1965-05 1.4 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-08 749.4 KB
1965	News briefs. 1965-09 381.8 KB
1965	News briefs. 1965-10 1.1 MB
1965	News briefs. 1965-11 1.2 MB
1965	News briefs. 1965-12 609.3 KB
1966	News briefs. 1966-01 1.4 MB
1958	Nine layouts in one interlocking 1.7 MB
1943	Norfolk & Western Installs CTC on 14 Miles of Single Track 4.4 MB
1927	NYC First to Install Complete Train Dispatching System 8.0 MB
1950	NYC Installs Big NX Plant at Fostoria, Ohio 3.9 MB
1964	NYC Moves CTC Point of Control 1.2 MB
1935	Obsolescence in Signaling 3.4 MB
1955	One CTC Machine Replaces Three 451.9 KB
1958	One track does work of two 521.4 KB
1958	One track does work of two on Maine Central 442.6 KB
1959	P&LE installs multiple track CTC 1.1 MB
1951	P&WV Signals Entire Main Line 3.9 MB
1937	Pennsylvania CTC Installation 7.0 MB
1940	Pennsylvania Installs Centralized Traffic Control On 69 Miles of Line 13.1 MB
1944	Pennsylvania Installs CTC On 53 Miles of Busy Single Track 8.5 MB
1955	Pennsylvania installs wayside equipment for cab signaling 745.7 KB
1951	Power Switches and Spring Swiches in CTC on the Frisco 1.2 MB
1935	Power-Off Lights at CTC Machines 2.1 MB
1958	Product news: Compact control center 231.1 KB
1931	Protecting CTC Switches 2.9 MB
1938	Protection at Hand-Operated Switches in CTC Territory 1.6 MB
1941	Protection at Hand-Thrown Switches in CTC Territory 1.6 MB
1959	Pushbutton console for CTC 785.3 KB
1957	Pushbutton CTC Machine on NYC Is First of Its Kind 3.3 MB
1954	Quebec, North Shore & Labrador 7.8 MB
1944	Railroad Applications of Electronics 1.9 MB
1942	Railroad Signals Go to War 11.4 MB
1961	Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB
1960	Railroads fit automation 186.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB
1956	Release of Locking 3.7 MB
1937	Remote Control By Code 7.0 MB
1956	Remote Control Converted to CTC 6.6 MB
1931	Remote Control for Interlocking Saves $6,000 Annually 328.9 KB
1953	Remote Control Interlockings Improve Terminal Operation 551.4 KB
1936	Remote Control on the Pennsylvania 14.5 MB
1958	Remote control saves money 868.5 KB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1931	Results of Centralized Control on NYC 703.8 KB
1932	Reverting to Single Track 646.7 KB
1965	Rhodesia has 1215 miles of CTC 949.2 KB
1944	Rio Grande has Longest CTC 9.2 MB
1948	Rock Island Adapts CTC to Medium-Traffic Single-Track Line 1.3 MB
1944	Rock Island Installs Cab Signaling and Centralized Traffic Control 10.0 MB
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1950	Rules, Standards and Instructions 1.5 MB
1963	S&C Role Is Basic To Bison Yard 3.0 MB
1959	Santa Fe CTCs double track line 2.2 MB
1944	Santa Fe Installs CTC on 115.6 Miles Los Angeles to San Diego 7.2 MB
1955	Santa Fe installs CTC on single track 610.2 KB
1961	Santa Fe Signals New Main Line 913.2 KB
1961	Should Sidings Have Circuits? 347.6 KB
1937	Should Train Order Signals Control Automatic Signals 1.2 MB
1960	Signal construction steady in 1959 385.2 KB
1957	Signal controls by track circuit only 575.8 KB
1951	Signal Modernization Program on the RF&P 1.0 MB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB
1933	Signaling Construction During 1932 632.3 KB
1944	Signaling Construction Increased in 1943 8.8 MB
1960	Signaling enters automation 630.7 KB
1959	Signaling moderate during '58 528.6 KB
1949	Signaling Saves Time on Frisco 4.8 MB
1958	Signaling to cut expenses in '58 411.4 KB
1959	Signaling: 1960 225.2 KB
1943	Signals Ordered on the Kansas City Southern 1.4 MB
1951	Simple Interlocking Saves Many Train Stops 375.6 KB
1933	Simplified Interlocking Installed at the Dayton Terminal 700.6 KB
1941	Simplified Signaling 426.9 KB
1950	Single Instead of Double Track Alongside Yards 1.3 MB
1951	Single Track with CTC Replaces Double Track on Milwaukee 586.0 KB
1940	Single-Track Signaling 2.5 MB
1951	Single-Track With CTC Handles 40 Trains Daily 530.8 KB
1943	Some Benefits of the War 780.5 KB
1947	Southern Pacific Installs CTC 990.2 KB
1962	SP Has 500 Miles of Automatic CTC 363.6 KB
1958	Special combinations of single-track and two-track replace double track on the Southern 960.9 KB
1960	Special report- Questions on hotbox detectors 290.9 KB
1939	Speeding Up Train Operation With Signaling 4.5 MB
1944	St. Louis Southwestern Installs Centralized Traffic Control 6.9 MB
1944	St. Louis-San Francisco Installs Centralized Traffic Control 8.3 MB
1956	Switch Machines for CTC 2.0 MB
1956	Switch Machines for CTC 985.3 KB
1960	T&P moves CTC machine 78 miles 423.0 KB
1938	The Outlook for Signaling 1.3 MB
1955	The Reading has compact control machine for consolidated interlocking 511.5 KB
1929	The Year 1928 in Retrospect and the Outlook for 1929 1.5 MB
1962	Toronto Railway Conference – Automatic Train Operation 448.4 KB
1944	Track Circuits on Passing Tracks in CTC Territory 941.8 KB
1937	Track Layout for CTC 1.2 MB
1937	Track Occupancy Indications in CTC Territory 2.7 MB
1959	Traffic control center 301.2 KB
1951	Traffic Direction Indication 152.0 KB
1949	Train Indicator for Motor Car 1.0 MB
1950	Train Movements by Signal Indication On the Clinchfield Route 12.0 MB
1949	Train Operation By Signal Inidication Used Extensively on the Nickel Plate 6.1 MB
1954	Train Operations When CTC Fails 2.0 MB
1956	Train Operations When CTC Fails 3.5 MB
1956	Train Operations When CTC Fails 2.4 MB
1940	Train Order Signals 4.2 MB
1961	Trainmen Read Hotbox Locator 1.1 MB
1939	Trains Directed by Signal Indication at San Jose, California 4.1 MB
1950	Two Single Tracks, Side By Side 1.4 MB
1943	Union Pacific Installs CTC on 175 Miles of Single Track 13.2 MB
1954	Unique Combinations of Single-Track and Two-Track Developed on the Southern 3.8 MB
1939	Unusual Signal Trouble 1.6 MB
1931	What Can Be Done Now? 736.8 KB
1964	What CTC Can Do For You 417.8 KB
1955	What CTC did for the Dixie Line 889.8 KB
1936	What Is the Capacity of a Single-Track Line? 2.0 MB
1965	What's the Answer? 1965-06 235.3 KB
1960	What's the answer? Absolute signals 477.6 KB
1958	What's the answer? Approach lighting 237.1 KB
1955	What's the Answer? CTC Into Service 409.5 KB
1958	What's the answer? CTC locking 269.2 KB
1959	What's the answer? Repeater signals 691.6 KB
1951	What's the Answer? Stop Signals in CTC 274.3 KB
1961	What’s the Answer? 1961-04 960.3 KB
1960	What’s the answer? Automatic OS 354.1 KB
1957	Where Two Tracks Do the Work of Four 3.2 MB
1954	Why Cotton Belt Installed CTC On 429 Miles of Single Track 4.0 MB
1957	Why Cotton Belt installed CTC on entire main line 914.0 KB
1957	Why not more Centralized Traffic Control? 344.2 KB
1936	Yard Entrance in Montreal Remotely Controlled 8.2 MB

Centre, Reading, PA 1

1955	The Reading has compact control machine for consolidated interlocking 511.5 KB

centrifugal relays 1

1940	Plug Couplers for Relays and Signals 1.3 MB

cetnralized traffic control 1

1959	Fewer wayside observers makes automatic hazard detection necessary 1.1 MB

Chaffee, MO 1

1965	Merging divisions require changing circuits 335.5 KB

Chalender, AZ 1

1961	News briefs. 1961-06 725.8 KB

Champaign, IL 11

1921	Educational Meetings On the Illinois Central 616.5 KB
1947	False Clear Signal 1.0 MB
1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB
1926	Illinois Central Continuous Train Stop Approved Without Major Exceptions 1.1 MB
1963	News briefs. 1963-02 1.3 MB
1922	News of the Month. 1922-03 314.9 KB
1923	News of the Month. 1923-11 1.8 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1938	Train Control Petition Denied by ICC 905.5 KB
1926	Train Control Progress in 1925 3.1 MB
1926	Train Stop Without Permissive Wayside Signals Used on IC 3.5 MB

Chapleau, Ontario 1

1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB

character generator 1

1964	Train Describers: A step toward ATI 2.1 MB

Charleston, SC 1

1963	News briefs. 1963-01 951.3 KB

Charleston, WV 1

1964	Individual radios carried by crewmen can aid yard work 549.7 KB

Charlestown, MA 1

1921	New Interlocking on the Boston Elevated 3.3 MB

Charlestown, OH 1

1947	Remote Control on Baltimore & Ohio 595.8 KB

Charlotte, MI 1

1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Charlottesville, VA 5

1923	C&O Installs Signaling With Train Control 5.8 MB
1928	C&O Signaling and Train Control Facilitate Operation 4.1 MB
1919	Electric Interlocking at Charlottesville, VA 535.5 KB
1965	News briefs. 1965-02 1.9 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Chattanooga Terminal 1

1949	New Interlocking at Chattanooga Terminal 5.2 MB

Chattanooga, TN 5

1947	Construction of Towers 213.3 KB
1951	Double Track to Single With CTC 197.9 KB
1955	Much is new in signaling for 1955 826.7 KB
1949	New Interlocking at Chattanooga Terminal 5.2 MB
1955	What CTC did for the Dixie Line 889.8 KB

Chaudiere, Quebec 1

1922	News of the Month. 1922-09 562.2 KB

Chebanse, IL 1

1923	News of the Month. 1923-07 1.9 MB

Chehalis Jct., WA 1

1964	News briefs. 1964-07 833.0 KB

Chelsea, MI 1

1965	News briefs. 1965-06 1.2 MB

Chelyan, WV 1

1960	News briefs. 1960-02 995.4 KB

Chemin de fer de l'Est 2

1931	French Railways Adopt Color-Light Signals 1.3 MB
1922	News of the Month. 1922-11 361.5 KB

Chemin de fer du Nord 2

1924	Electric Interlockings On the French Northern 4.4 MB
1922	News of the Month. 1922-10 368.4 KB

Cherry Hill, VA 1

1955	How to run reverse temporarily 197.6 KB

Cherry Street, Toronto, Ontario 1

1931	Interlocking System Installed at Toronto Union Station 4.6 MB

Chesapeake & Ohio 115

1921	A New Idea in Traffic Locking On the C&O 1.7 MB
1929	Adjustment of Clockwork Time Releases 1.4 MB
1935	Aerial Cable Versus Open Line 3.9 MB
1956	Air Line Leak 1.1 MB
1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1932	Automatic Interlockers 1.0 MB
1922	Automatic Train Control in Use On American Railroads 353.7 KB
1936	Back Locks on Approach Signals 1.4 MB
1937	Broken Rails 1.1 MB
1934	C&O Combines Two Interlockings in Centralized Control 2.6 MB
1927	C&O Completes Three-Track Color-Light, Either-Direction Signaling 3.9 MB
1955	C&O Consolidates Interlockings 3.2 MB
1958	C&O Has Good Ideas in CTC 2.5 MB
1930	C&O Installs New Interlocking and Either-Direction Signaling 5.0 MB
1923	C&O Installs Signaling With Train Control 5.8 MB
1936	C&O Remote Control 12.8 MB
1928	C&O Signaling and Train Control Facilitate Operation 4.1 MB
1935	Centralized Traffic Control on the Chesapeake & Ohio 6.2 MB
1936	Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB
1938	Changing Relays 1.7 MB
1928	Color Light Train Order Signals Are Effective 2.9 MB
1955	Crossing protection for 16 streets 371.1 KB
1949	CTC Increases Capacity of Single-Track Freight Line Handling Heavy Traffic 6.1 MB
1953	CTC Replaces Manual Block On Single Track 9.0 MB
1955	CTC Saves Time for Freights On 135 Miles of Single Track 4.0 MB
1951	Cut-Out Controls for Crossing Gates 488.0 KB
1937	Direct-Wire or Coded Circuits 1.3 MB
1926	Directing Trains By Signals 1.9 MB
1926	Economics of Single Track Signals 2.0 MB
1919	Electric Interlocking at Charlottesville, VA 535.5 KB
1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB
1928	Emergency Release Circuits 2.4 MB
1935	FPL Adjustment on Spring Switches 1.3 MB
1937	Gages for Mechanical Locking 2.4 MB
1949	Hold-Out Signals in CTC 1.0 MB
1958	How to save time when trains are entering yards 513.6 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1962	Identifying Emblems 326.9 KB
1964	Individual radios carried by crewmen can aid yard work 549.7 KB
1937	Inspection of Signal Facilities 2.1 MB
1950	Instrument Case Platforms 3.7 MB
1955	Interlocking Expedites Terminal Moves 1.6 MB
1950	Interlocking Plant Horns 1.2 MB
1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1937	Location of Signals at Spring Switches 1.3 MB
1954	Loudspeakers and Interlocking Improve Yard Operation 4.7 MB
1949	Main Line Crossovers 2.4 MB
1927	Marking Signals When Out of Service 1.1 MB
1951	Modern Interlocking on the Norfolk & Western 710.2 KB
1949	Modern Signaling on a Division 6.6 MB
1957	More automation for signaling in 1957 1.2 MB
1927	Multiplicity of Circuits for Operating Call-on Arms 1.5 MB
1937	New Automatics on the C&O 5.0 MB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-07 845.4 KB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-10 1.0 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-09 838.3 KB
1962	News briefs. 1962-11 468.1 KB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-05 720.2 KB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-02 1.9 MB
1965	News briefs. 1965-08 749.4 KB
1965	News briefs. 1965-10 1.1 MB
1965	News briefs. 1965-12 609.3 KB
1922	News of the Month. 1922-03 314.9 KB
1950	NYC Installs Big NX Plant at Fostoria, Ohio 3.9 MB
1937	Ohio Flood Damages Signaling 9.7 MB
1957	One Machine Controls Two Plants 2.2 MB
1960	Planning the C&O's CLIC – The economics of data communications 1.1 MB
1925	Position Light Take Siding Signal in Combination With Semaphore Installed on C&O 675.6 KB
1933	Preventing Lamp Failures 1.2 MB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1959	Pushbutton console for CTC 785.3 KB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1933	Reducing Unnecessary Train Stops 2.5 MB
1956	Remote Control Converted to CTC 6.6 MB
1950	Remote Control of Center Sidings On Busy Double-Track Line 3.6 MB
1937	Replacement and Life of Lamps 3.0 MB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1927	Several Effective Trap Circuit Schemes 1.4 MB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB
1960	Signal construction steady in 1959 385.2 KB
1956	Signal Lamp Test 950.0 KB
1935	Signaling at Spring Switches 2.6 MB
1959	Signaling moderate during '58 528.6 KB
1958	Signaling to cut expenses in '58 411.4 KB
1940	Single-Track Signaling 2.5 MB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1956	Switch Machines for CTC 985.3 KB
1936	Testing New Interlocking 3.5 MB
1926	The Direction of Train Movements by Signal Indication Without Written Train Orders 829.5 KB
1932	The Erie Installs Either-Direction Signaling 1.6 MB
1925	The Train Control Situation 853.0 KB
1927	Train Operation Without Written Train Orders 3.3 MB
1954	Train Operations When CTC Fails 2.0 MB
1926	Training of New Levermen 654.5 KB
1955	Unusual control for crossing protection 722.1 KB
1927	Various Circuits for Directional Control of Single Track Signals 2.6 MB
1936	What Is the Capacity of a Single-Track Line? 2.0 MB
1929	What Kind of Control for Take-Siding Signals? 512.5 KB
1955	What's the Answer? CTC Into Service 409.5 KB
1960	What's the answer? Route signaling 205.2 KB
1929	Where Should Grade Signals Be Installed? 1.2 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB
1955	Yard radio pays its way on the C&O 799.6 KB

Chester, IL 1

1965	News briefs. 1965-10 1.1 MB

Chester, MT 3

1961	News briefs. 1961-06 725.8 KB
1962	News briefs. 1962-01 986.8 KB
1963	News briefs. 1963-06 961.3 KB

Chester, VA 1

1932	An Early Automatic Interlocking 411.4 KB

Chestnut Hill, PA 3

1934	New Signaling on the Reading 631.4 KB
1916	Service Record of Position-Light Signals 580.8 KB
1937	Spring Switch at Branch Line Terminus 5.0 MB

Cheviot, OH 2

1953	CTC Replaces Manual Block On Single Track 9.0 MB
1963	News briefs. 1963-05 720.2 KB

Cheyenne, WY 4

1955	CTC and cab signaling on Union Pacific 789.5 KB
1947	ICC Holds Signal Hearing 507.5 KB
1951	More Signal Construction in 1950 1.0 MB
1935	Safety of High Speed Trains 5.2 MB

Chicago & Alton 11

1914	All Electric Interlocking at Joliet 1.5 MB
1929	Automatic Interlocker Saves Over 8,000 Train Stops Annually 1.7 MB
1929	C. & A. Modernizes Signaling Facilities 2.2 MB
1923	Chicago & Alton Installation of Train Control 1.4 MB
1915	Emergency Suburban Traffic 252.9 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1918	New Mechanical Plant on Chicago & Alton 702.8 KB
1917	New Plant in Chicago Terminal District 591.7 KB
1929	The Chicago & Alton Installs Mechanical Plant 1.3 MB
1925	The Train Control Situation 853.0 KB
1926	Train Control Progress in 1925 3.1 MB

Chicago & Eastern Illinois 34

1944	A Collision Despite Automatic Signals 2.7 MB
1911	A Summary of Signaling Practice 3.6 MB
1934	Accident at Crossing 491.3 KB
1947	All-Relay Plant on the C&EI at Danville, Ill 915.6 KB
1928	Automatic Signals Within Yard Limits 1.0 MB
1922	Automatic Train Control in Use On American Railroads 353.7 KB
1929	C&EI Derailment and Collision at Chicago 755.9 KB
1928	C&EI Installs Automatic Interlocker at Main Line Crossing 3.7 MB
1948	CTC Keeps ‘em Rollin’ on C&EI 2.1 MB
1952	CTC Machine Hangs High But Trains Run 704.9 KB
1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB
1908	Electro-Pneumatic Interlocking Plant On the Chicago & Western Indiana Railroad at 47th Street, Chicago 3.9 MB
1928	Elimination of Derails 796.4 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1934	Lamp Ratings for Flashing Lights 695.8 KB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-10 1.8 MB
1960	News briefs. 1960-11 875.5 KB
1961	News briefs. 1961-03 1.0 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-11 468.1 KB
1965	News briefs. 1965-06 1.2 MB
1937	Ohio Flood Damages Signaling 9.7 MB
1937	Railroad Grade Crossing Gates 2.2 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1928	Signal and Train Control Hearing Ends 2.0 MB
1951	Simple Interlocking Saves Many Train Stops 375.6 KB
1927	Small Bench Anvil Made from Scrap Rail 378.0 KB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1925	The Train Control Situation 853.0 KB
1926	Train Control Progress in 1925 3.1 MB

Chicago & Illinois Midland 7

1931	Chicago & Illinois Midland Installs Electric Interlocking 2.5 MB
1937	Illumination as a Type of Crossing Protection 3.0 MB
1949	Insulation of Rails 874.8 KB
1918	New Mechanical Plant on Chicago & Alton 702.8 KB
1963	News briefs. 1963-12 429.2 KB
1950	OSing Device 1.4 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB

Chicago & North Western 138

1919	A Peculiar Accident 251.7 KB
1920	A Special Circuit Saves Money 394.1 KB
1911	A Summary of Signaling Practice 3.6 MB
1916	AC Signaling for Chicago Terminals 585.7 KB
1929	Adjustment of Clockwork Time Releases 1.4 MB
1947	Annual Review and Outlook 425.1 KB
1937	APB Circuits 1.1 MB
1925	Approach Locking Circuit That Is Dependent Upon Signal Position 648.1 KB
1928	Are Call-On Signals Safe? 1.2 MB
1935	Auto Stop Installed on C&NW 7.2 MB
1928	Automatic Interlockers Are Profitable Investments 3.3 MB
1932	Automatic Interlocking Replaces Mechanical Plant 1.7 MB
1928	Automatic Train Control on the Chicago & North Western 5.7 MB
1935	Avoiding Light-Out Signal Failures 2.2 MB
1938	B&OCT Installs Route Interlocking 8.9 MB
1929	C&NW Employs Centralized Control To Speed Up Trains 3.0 MB
1959	C&NW has system-wide car reporting 702.6 KB
1926	C&NW Replaces Highway Crossing Gates With Wig-Wags 2.0 MB
1923	C&NW Tests GRS Train Control 3.7 MB
1965	C&NW’s ATC uses 100 cps AC 901.0 KB
1930	Car Retarders Installed by C&NW at Proviso Yard, near Chicago 3.7 MB
1928	Changes on the C&NW 978.4 KB
1961	Check Switch Heaters Now 297.3 KB
1959	Chicago & North Western Has Unique Hump Cab Signal Controls 2.2 MB
1932	Collision in Signal Territory 513.9 KB
1925	Color-Light Signals on C&NW 6.9 MB
1915	Compensation of Pipe Lines 319.6 KB
1933	Consolidated Interlockings 1.8 MB
1928	Continued Activity and Development in Signaling 1.1 MB
1965	Crossing protection gets new look 490.1 KB
1958	Crossing protection program saves 59% 553.4 KB
1935	Crossing Signals on the C&NW at Oshkosh, Wis 3.4 MB
1960	Crossings are safer after 10 years 454.4 KB
1950	CTC Code Lines 1.1 MB
1955	CTC on single and double track 406.8 KB
1936	Demands for Modern Signaling 12.1 MB
1928	Early APB Signaling 408.5 KB
1934	Economy in Operation of Track Circuits 554.1 KB
1922	Effect of Overlaps on Track Capacity With Three Position Signaling 924.8 KB
1926	Electric Plant Replaces Three Mechanical Interlockings 3.0 MB
1915	Emergency Suburban Traffic 252.9 KB
1925	Enginemen Try to Force C&NW to Discontinue Left-Hand Operation- News of the Month (June 1925) 751.2 KB
1929	Further Comments on Detector Locking Releases 511.5 KB
1953	Gates at Three Crossings 5.3 MB
1943	Gates at Three Crossings on C&NW 3.4 MB
1956	Gates Installed at Five Crossings … Barriers at Four.pdf 5.0 MB
1911	General News (August 1911) 557.3 KB
1922	Highway Crossing Protection in Theory and Practice 5.5 MB
1945	ICC Calls For Switch Locks 1.5 MB
1947	ICC Holds Signal Hearing 507.5 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1947	ICC Signal Hearings 179.7 KB
1936	Importance of Warning Whistle 6.8 MB
1955	Improved protection at seven crossings 309.9 KB
1935	Inspecting Switch Circuit Controllers 1.7 MB
1935	Installation of Bond Wires 1.2 MB
1911	Interlocking on the North Western Terminal 7.6 MB
1934	Lamp Ratings for Flashing Lights 695.8 KB
1930	Light-out Protection 1.1 MB
1936	Lights Interfere With View of Signals 2.3 MB
1936	Location of Home Signals at Automatic Interlockings 3.0 MB
1950	Longest Continuous Double-Track CTC Is on North Western 5.1 MB
1924	Low-Voltage Interlocking on C&NW 1.6 MB
1910	Main Street Tower on the Chicago & North Western at Evanston, IL 666.9 KB
1918	Maintaining an Interlocking Plant at High Tide 241.8 KB
1925	Maintenance on C&NW Terminals 12.5 MB
1965	Midwest RRs fight the weather 914.4 KB
1938	Milwaukee Rehabilitates Large Plant 8.0 MB
1934	Moving Interlocking Machines 1.1 MB
1955	Much is new in signaling for 1955 826.7 KB
1913	New Block Signaling on the North-Western 1.8 MB
1917	New C&NW Bascule Bridge Interlocking 761.1 KB
1917	New Interlocking Plant in Milwaukee 1.2 MB
1935	New Signaling on the Route of the C&NW "400" 9.6 MB
1958	News briefs. 1958-01 1.8 MB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-10 1.0 MB
1963	News briefs. 1963-10 497.4 KB
1963	News briefs. 1963-11 1.4 MB
1963	News briefs. 1963-12 429.2 KB
1964	News briefs. 1964-06 812.0 KB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-08 749.4 KB
1965	News briefs. 1965-10 1.1 MB
1922	News of the Month. 1922-12 388.1 KB
1941	Non-Stop Permissive Signals 2.8 MB
1936	North Western Installs Automatic Gates 15.9 MB
1959	North Western installs automatic gates at nine crossings 699.9 KB
1945	North Western Tests Train Radio 2.1 MB
1937	Personal: C&NW 1.3 MB
1925	Preliminary Report on C&NW Train Control 929.6 KB
1918	Preparation For Winter On a Busy Terminal 273.8 KB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1931	Remotely-Controlled Interlocking Solves Problem on C&NW 1.9 MB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1929	Report on C&NW Side Collision at Chicago 569.4 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1935	Safety of High Speed Trains 5.2 MB
1929	Secure New Ordinances for Changes in Crossing Protection 691.4 KB
1956	Signal Lamp Test 1.4 MB
1933	Signal or Rule? 1.1 MB
1911	Signaling and Interlocking on the North Western Terminal in Chicago 1.1 MB
1935	Signaling for Higher Train Speeds 3.0 MB
1958	Signaling to cut expenses in '58 411.4 KB
1932	Smashboard Mechanisms 1.7 MB
1951	Special Protection Problems Solved With Gates and Flashers 1.5 MB
1936	Speed at Automatic Plants 4.9 MB
1913	Speed Restrictions on the Chicago & North Western 722.9 KB
1927	Spring Switches Used Extensively on Chicago & North Western 3.4 MB
1953	Stanley E. Noble Retires 703.8 KB
1935	Stopping Distance and Signal Spacing 1.8 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1920	Testing Insulated Joints 601.5 KB
1935	The "400" to Run on Six and One Half Hour Schedule 942.0 KB
1911	The Newest Terminal Interlocking 611.9 KB
1919	The Night Signal Indication 335.6 KB
1953	The North Western Installs Automatic Train-Stop System 3.5 MB
1935	The Railways' Answer to the Demand for Speed 2.8 MB
1925	The Train Control Situation 853.0 KB
1917	The Use of Photography in Signaling 432.5 KB
1924	Three Train Control Contracts Let 1.9 MB
1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB
1935	Traffic Type Signals for Protection of Highway-Railroad Crossings 2.5 MB
1922	Train Control on the C&NW 824.8 KB
1926	Train Control Progress in 1925 3.1 MB
1923	Train-Order Signals at Interlockers 3.6 MB
1950	Two Single Tracks, Side By Side 1.4 MB
1927	Unique Highway Crossing Signals Solve Traffic Problem 1.4 MB
1934	Use of Dwarf Calling-On Signals 1.0 MB
1935	Use of Marker Lamps 1.0 MB
1927	Various Circuits for Directional Control of Single Track Signals 2.6 MB
1928	What Is the Cost of a Train Stop? 463.2 KB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB
1936	Wilmer W. Salmon, President of General Railway Signal Company, Dies 2.8 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Chicago & Western Indiana 17

1916	AC Signaling for Chicago Terminals 585.7 KB
1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1953	Chicago & Western Indiana Installs Easily Manipulated Interlocking 8.1 MB
1947	Construction of Towers 213.3 KB
1908	Electro-Pneumatic Interlocking Plant On the Chicago & Western Indiana Railroad at 47th Street, Chicago 3.9 MB
1915	Emergency Suburban Traffic 252.9 KB
1943	Fire-Proof Construction 11.6 MB
1910	Mechanical Interlocking at State Line 1.0 MB
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1924	New Interlocking Construction Ideas 3.4 MB
1965	News briefs. 1965-04 1.5 MB
1956	Plastic Track Model Is Big Picture for Levermen 1.4 MB
1910	Reconstruction of Burnside Interlocking 863.7 KB
1917	Rock Island Signaling on the Chicago Terminal 1.2 MB
1926	Semaphore or Light Signals? 1.4 MB
1941	Two New Interlockings on the C&WI 5.1 MB
1935	Western Indiana Installs All-Relay Interlocking 11.4 MB

Chicago Aurora & Elgin 1

1959	North Western installs automatic gates at nine crossings 699.9 KB

Chicago Great Western 19

1911	A Summary of Signaling Practice 3.6 MB
1928	Automatic Interlocker on Chicago Great Western Effects Saving 2.4 MB
1932	Automatic Interlockers 1.0 MB
1932	Automatic Interlocking Replaces Mechanical Plant 1.7 MB
1911	Automatic Signals on the Chicago Great Western 7.4 MB
1950	Centralized Train Dispatching 1.4 MB
1927	Checking Up on Signal Observance 774.5 KB
1931	Chicago Great Western Saves $7,000 Annually by Remote Control of Tunnel Interlockings 3.7 MB
1935	Great Western Constructs Automatic Interlocking 6.8 MB
1965	Midwest RRs fight the weather 914.4 KB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1962	News briefs. 1962-11 468.1 KB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1935	Signaling at Spring Switches 2.6 MB
1936	Signals Installed at 26 Crossings in Dubuque, IA 13.8 MB
1951	Special Protection Problems Solved With Gates and Flashers 1.5 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1923	Train-Order Signals at Interlockers 3.6 MB

Chicago Heights, IL 4

1932	B&OCT Stops Theft of Coal with Four Automatic Plants at Chicago Heights, IL 1.9 MB
1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB
1960	News briefs. 1960-02 995.4 KB
1950	Signals for Trains at Highway Crossings 5.9 MB

Chicago Jct., Kansas City, MO 1

1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB

Chicago Junction 3

1938	B&OCT Installs Route Interlocking 8.9 MB
1923	News of the Month. 1923-11 1.8 MB
1928	Rock Island Completes 33-Lever Electric Interlocker 2.8 MB

Chicago Motor Club 1

1937	Modernizing Crossing Protection With New Safety Features 2.9 MB

Chicago North Shore & Milwaukee 5

1954	Automatic Gates Increase Safety 3.2 MB
1941	Automatics Installed on North Shore 1.6 MB
1938	North Shore Installs Automatics 3.9 MB
1926	North Shore Line Installs Two Electric Interlockers 2.1 MB
1937	Rear-End Collision 1.3 MB

Chicago Railway Signal & Supply 1

1926	A New Development in Chromatic Light Signals 1.2 MB

Chicago Rapid Transit 5

1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB
1935	New and Unusual Signal and Relay Repair Shop on the Chicago Rapid Transit 9.0 MB
1935	New Interlocking in the Chicago Loop 4.0 MB
1937	Rear-End Collision 1.3 MB
1941	Splicing a Submarine Cable 4.6 MB

Chicago South Shore & South Bend 15

1929	Automatic Gauntlet Signals Installed on the South Shore 1.9 MB
1927	Chicago South Shore & South Bend Changes Signal Equipment 2.6 MB
1928	Color Light Train Order Signals Are Effective 2.9 MB
1950	Gate-Arm Stripe Colors 3.4 MB
1947	Highway Crossing Protection Installed by Several Railroads in Gary, IndianaR 1.2 MB
1929	Marker Lights on Automatic Signals 994.2 KB
1949	New Space Radio Relay System Adopted by South Shore 4.2 MB
1963	News briefs. 1963-02 1.3 MB
1951	South Shore Line Records Gate Operations 375.1 KB
1928	South Shore Line Uses Spring Switches on Heavy Traffic Lines 1.4 MB
1934	South Shore Reconstructs Interlocking 1.2 MB
1933	The Chicago South Shore & South Bend's Signaling Progress 2.8 MB
1929	Trap Circuit for Drawbridge 980.8 KB
1956	Walkie-Talkies 1.5 MB
1930	What Protection at Drawbridges? 3.5 MB

Chicago subway 1

1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB

Chicago switching district, IL 1

1947	Burlington Uses Radio on Switchers 909.1 KB

Chicago Transit Authority 21

1956	Automatic Crossing Gates on CTA Are Interconnected with Street Traffic Lights 5.1 MB
1958	Chicago Transit tests train-phone 282.5 KB
1952	Chicago's Newest Subway Has Automatic Block Signaling and Train Stop 1.1 MB
1954	Junction Controlled Automatically 2.5 MB
1950	Lunar White 419.3 KB
1957	More automation for signaling in 1957 1.2 MB
1955	Much is new in signaling for 1955 826.7 KB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-03 1.9 MB
1961	News briefs. 1961-01 761.9 KB
1961	News briefs. 1961-03 1.0 MB
1961	News briefs. 1961-05 1.1 MB
1963	News briefs. 1963-03 790.6 KB
1964	News briefs. 1964-08 811.5 KB
1965	News briefs. 1965-02 1.9 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.3 KB
1966	News briefs. 1966-01 1.4 MB
1960	Railroads fit automation 186.8 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1959	Signaling moderate during '58 528.6 KB

Chicago Union Station 8

1932	Burlington Installs Extensive New Electric Interlocking 3.6 MB
1925	Interlockings of New Chicago Station 7.8 MB
1923	New Type of Signals Being Installed at the Chicago Union Station 799.6 KB
1922	News of the Month. 1922-03 314.9 KB
1922	News of the Month. 1922-06 516.2 KB
1932	Reconstruction of an Interlocking 1.7 MB
1930	Signal Aspects for a Four Block System 2.8 MB
1922	Signaling Busy Passenger Terminals 969.1 KB

Chicago, Burlington & Quincy 129

1938	"Yard Limit" Boards in CTC Territory 1.3 MB
1949	A Century of Signal Glass Developments 4.2 MB
1940	A Change in the Requisites, Definitions and Regulations 1.2 MB
1935	Aerial Cable Versus Open Line 3.9 MB
1932	An Early Automatic Interlocking 411.4 KB
1950	Audible Warning Sounded When Dragging Equipment Detectors Operate 4.2 MB
1958	Automatic classification yard in service on the Burlington at Chicago 2.9 MB
1939	Automatic Cut-Outs at an Automatic Interlocking 7.6 MB
1934	Automatic Interlocking in Train Control Territory 1.5 MB
1928	Burlington Completes Automatic Signals Chicago to Denver 5.1 MB
1930	Burlington Completes Centralized Traffic Control on 24 Miles of Single Track 3.7 MB
1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB
1931	Burlington Develops Signal Repair Shop at Aurora, IL 370.9 KB
1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB
1956	Burlington Has Modified CTC for Medium Traffic Single-Track 7.2 MB
1930	Burlington Installs Centralized Control on Nine Miles of Double Track 1.8 MB
1951	Burlington Installs Extensive Interlocking at Kansas City 1.0 MB
1932	Burlington Installs Extensive New Electric Interlocking 3.6 MB
1959	Burlington installs modified CTC 1.0 MB
1937	Burlington Protects Three Crossings 6.9 MB
1939	Burlington Replaces Semaphores With Color Lights 3.4 MB
1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1946	Burlington Tests Show Signals Adequate 1.3 MB
1947	Burlington Uses Radio on Switchers 909.1 KB
1932	Burlington's Reconstruction Program at Galesburg Involves Modern Interlocking Plants 2.6 MB
1931	Call-on Route Control 1.4 MB
1933	Call-On Signals (editorial) 1.0 MB
1925	CB&Q Controls Switches Remotely 3.7 MB
1931	CB&Q Installs Electric Interlockinig 3.3 MB
1923	CB&Q Installs New Light Signals 4.1 MB
1925	CB&Q Plant Has Novel Features 5.5 MB
1956	Centralia Has Protection of All Crossings 6.7 MB
1928	Centralized Control on Burlington Saves $16,200 a Year 2.4 MB
1929	Centralized Control Used for Ends of Double Track 2.1 MB
1930	Centralized Traffic Control Indications 1.1 MB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1943	Change-Over Circuits 739.0 KB
1926	Color Light Signal and A.C. Floating Change-Over on the Burlington 1.9 MB
1943	Continuously Coded Local Line Wire Signal Control Circuits 4.5 MB
1954	CTC into Service 2.5 MB
1955	CTC on single and double track 406.8 KB
1950	DC Track Circuit Trouble 1.6 MB
1936	Demands for Modern Signaling 12.1 MB
1926	Directing Trains By Signals 1.9 MB
1936	Double-Caution Signaling 3.4 MB
1928	Early APB Signaling 408.5 KB
1933	Economics of Modern Signaling 2.1 MB
1934	Emergency CTC Equipment 461.2 KB
1915	Emergency Suburban Traffic 252.9 KB
1925	Excellent Results for 35 Years on Burlington 1.5 MB
1939	ICC Approves Automatic Interlocking to Replace Mechanical Plant 1.0 MB
1947	ICC Holds Signal Hearing 507.5 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1965	Indication locking inadequate says ICC in report 849.9 KB
1935	Inspecting Switch Circuit Controllers 1.7 MB
1935	Installation of Bond Wires 4.0 MB
1929	Interlocking Controlled Remotely 2.7 MB
1953	Location of Signal Heads 624.7 KB
1929	Maintenance Tests at Burlington Interlocker 1.2 MB
1965	Midwest RRs fight the weather 914.4 KB
1950	Modern Communications In Yards and Terminals 1.4 MB
1957	More automation for signaling in 1957 1.2 MB
1947	More CTC on the Burlington 2.0 MB
1946	More Difficult to Get a Call-On Signal 488.8 KB
1951	More Signal Construction in 1950 1.0 MB
1955	Much is new in signaling for 1955 826.7 KB
1931	New Control System Used at Electric Interlocking on the Burlington 3.5 MB
1918	New Electric Interlocking at Clyde, IL 418.7 KB
1930	New Electric Interlocking on the Burlington Eliminates 160 Train Stops Per Day 2.8 MB
1946	New Signal Control Line Circuits in Centralized Traffic Control Territory on the Burlington 2.8 MB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1954	New Wayside and Cab Signaling 753.2 KB
1955	News briefs. 1955-08 830.4 KB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-09 756.9 KB
1961	News briefs. 1961-06 725.8 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-04 1.2 MB
1962	News briefs. 1962-10 461.7 KB
1963	News briefs. 1963-11 1.4 MB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-08 811.5 KB
1964	News briefs. 1964-11 797.3 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-09 381.8 KB
1965	News briefs. 1965-10 1.1 MB
1965	News briefs. 1965-11 1.2 MB
1922	News of the Month. 1922-06 516.2 KB
1922	News of the Month. 1922-07 360.7 KB
1922	News of the Month. 1922-10 368.4 KB
1922	News of the Month. 1922-12 388.1 KB
1931	Point Detector or Switch Circuit Controller for CTC Switches? 835.1 KB
1935	Preventing Unnecessary Operation of Highway-Railroad Crossing Signals 4.3 MB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB
1935	Purple Signal Glasses 3.6 MB
1937	Push-Button Cut-Outs 989.3 KB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1935	Safety of High Speed Trains 5.2 MB
1927	Several Effective Trap Circuit Schemes 1.4 MB
1928	Should Call-On Arms Be Used? 1.0 MB
1961	Should Sidings Have Circuits? 347.6 KB
1934	Signal Aspects at an Automatic Interlocking Plant 1.2 MB
1930	Signal Indications Direct Trains on the Paducah & Illinois 5.0 MB
1956	Signal Lamp Test 1.4 MB
1933	Signaling Construction During 1932 632.3 KB
1935	Signaling for Higher Train Speeds 3.0 MB
1959	Signaling moderate during '58 528.6 KB
1929	Signaling Problems of the Future 1.5 MB
1936	Signals Installed at 26 Crossings in Dubuque, IA 13.8 MB
1956	Switch Machines for CTC 985.3 KB
1935	The Railways' Answer to the Demand for Speed 2.8 MB
1925	The Train Control Situation 853.0 KB
1920	The Use of Signals for Better Train Operation (Part 2 of 2) 7.3 MB
1954	This Automatic Block Is Different 3.3 MB
1939	Track Relay Release Time 1.6 MB
1937	Track Shunting Problems 947.3 KB
1926	Train Control Progress in 1925 3.1 MB
1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB
1956	Train Operations When CTC Fails 2.4 MB
1958	What's the answer? CTC locking 269.2 KB
1951	What's the Answer? Stop Signals in CTC 274.3 KB
1937	Zephyr Train Telephones 2.3 MB

Chicago, IL 115

1960	"Dry" message duplication saves money 234.7 KB
1932	A Call-On Signal Is Different from a Stop and Proceed Signal 667.6 KB
1916	A New York Central Plant in Chicago 590.7 KB
1919	A Peculiar Accident 251.7 KB
1916	AC Signaling for Chicago Terminals 585.7 KB
1958	Automatic classification yard in service on the Burlington at Chicago 2.9 MB
1937	Automatic Gates on the Rock Island 7.3 MB
1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB
1938	B&OCT Installs Route Interlocking 8.9 MB
1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1917	Block Signals on the Monon 675.3 KB
1928	Burlington Completes Automatic Signals Chicago to Denver 5.1 MB
1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB
1932	Burlington Installs Extensive New Electric Interlocking 3.6 MB
1947	Burlington Uses Radio on Switchers 909.1 KB
1929	C&EI Derailment and Collision at Chicago 755.9 KB
1959	C&NW has system-wide car reporting 702.6 KB
1965	C&NW’s ATC uses 100 cps AC 901.0 KB
1953	Chicago & Western Indiana Installs Easily Manipulated Interlocking 8.1 MB
1958	Chicago Transit tests train-phone 282.5 KB
1952	Chicago's Newest Subway Has Automatic Block Signaling and Train Stop 1.1 MB
1926	Color Light Signal and A.C. Floating Change-Over on the Burlington 1.9 MB
1958	Crossing protection program saves 59% 553.4 KB
1960	Crossings are safer after 10 years 454.4 KB
1947	Crossover protection on the GM&O 2.6 MB
1958	CTC Handles 15 More Trains 2.2 MB
1926	Directing Trains By Signals 1.9 MB
1934	Economy in Operation of Track Circuits 554.1 KB
1943	Electric Interlocking Installed On IC 12.8 MB
1938	Electric Switch Heaters at Rock Island Interlocking 1.8 MB
1926	Electro-Pneumatic Car Retarders in Service on Illinois Central 3.8 MB
1915	Emergency Suburban Traffic 252.9 KB
1925	Excellent Results for 35 Years on Burlington 1.5 MB
1941	Flashing Yellow as a Fourth Aspect on the IC 2.6 MB
1952	Gates at Eight Street Crossings on the Milwaukee Road 503.5 KB
1940	Gates, Signals and Traffic Lights at a Wabash Crossing 6.8 MB
1950	IC Rebuilds Classification Yard 6.9 MB
1947	ICC Holds Signal Hearing 507.5 KB
1946	ICC Signal Hearing 1.3 MB
1947	ICC Signal Hearings 179.7 KB
1932	Illinois Central Installs 68-Lever Electric Plant 3.3 MB
1941	Illinois Central Uses Automatic Telephone System on Chicago Terminal Area 5.8 MB
1939	Interconnection of Train Signals and Crossing Protection 1.1 MB
1911	Interlocking on the North Western Terminal 7.6 MB
1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1940	Interlockings Installed at Two Crossings 6.5 MB
1925	Interlockings of New Chicago Station 7.8 MB
1954	Junction Controlled Automatically 2.5 MB
1956	Length of Train Selects Control of Crossing Gates on Illinois Central 4.6 MB
1960	Lock bypass causes 2 accidents 370.2 KB
1925	Maintenance on C&NW Terminals 12.5 MB
1931	Michigan Central Makes Extensive Improvements in Signaling System 3.3 MB
1964	Milwaukee installs its first microwave 277.4 KB
1938	Milwaukee Rehabilitates Large Plant 8.0 MB
1942	Milwaukee Replaces Mechanical Plant With All-Relay Electric Interlocking 5.7 MB
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1957	More automation for signaling in 1957 1.2 MB
1951	More Signal Construction in 1950 1.0 MB
1955	Much is new in signaling for 1955 826.7 KB
1935	New and Unusual Signal and Relay Repair Shop on the Chicago Rapid Transit 9.0 MB
1916	New Automatic Signals on Grand Trunk 997.0 KB
1917	New C&NW Bascule Bridge Interlocking 761.1 KB
1924	New Interlocking Construction Ideas 3.4 MB
1935	New Interlocking in the Chicago Loop 4.0 MB
1917	New Plant in Chicago Terminal District 591.7 KB
1935	New Signaling on the Route of the C&NW "400" 9.6 MB
1923	New Type of Signals Being Installed at the Chicago Union Station 799.6 KB
1954	New Wayside and Cab Signaling 753.2 KB
1955	News briefs. 1955-08 830.4 KB
1960	News briefs. 1960-06 1.2 MB
1962	News briefs. 1962-08 675.9 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-05 1.0 MB
1965	News briefs. 1965-04 1.5 MB
1965	News briefs. 1965-09 381.8 KB
1922	News of the Month. 1922-09 562.2 KB
1938	North Shore Installs Automatics 3.9 MB
1929	NYC Expands Electric Plant By Adding 48 Levers 2.7 MB
1931	One Electric Interlocking for Two Drawbridges 3.1 MB
1920	Pere Marquette Resort Special in Head-On Collision 354.4 KB
1918	Preparation For Winter On a Busy Terminal 273.8 KB
1965	PRR converts two hump yards 630.5 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB
1937	Rear-End Collision 1.3 MB
1932	Reconstruction of an Interlocking 1.7 MB
1910	Reconstruction of Burnside Interlocking 863.7 KB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1957	Relay Interlocking Saves Time at Yard Entrances 2.5 MB
1929	Report on C&NW Side Collision at Chicago 569.4 KB
1928	Rock Island Completes 33-Lever Electric Interlocker 2.8 MB
1917	Rock Island Signaling on the Chicago Terminal 1.2 MB
1953	Route Lever Interlocking on Rock Island 6.5 MB
1935	Safety of High Speed Trains 5.2 MB
1938	Semi-Automatic Gates on the Milwaukee 3.2 MB
1960	Signal construction steady in 1959 385.2 KB
1933	Signal Publicity 666.2 KB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB
1911	Signaling and Interlocking on the North Western Terminal in Chicago 1.1 MB
1922	Signaling Busy Passenger Terminals 969.1 KB
1935	Signaling for Higher Train Speeds 3.0 MB
1959	Signaling moderate during '58 528.6 KB
1927	Signaling of IC Chicago Terminal 6.4 MB
1934	South Shore Reconstructs Interlocking 1.2 MB
1941	Splicing a Submarine Cable 4.6 MB
1935	The "400" to Run on Six and One Half Hour Schedule 942.0 KB
1911	The Newest Terminal Interlocking 611.9 KB
1953	The North Western Installs Automatic Train-Stop System 3.5 MB
1915	The Push Button Interlocking Plant at Clearing Yard 351.3 KB
1937	Three Gate Crossings in a Row 4.2 MB
1926	Train Control Progress in 1925 3.1 MB
1941	Two New Interlockings on the C&WI 5.1 MB
1935	Western Indiana Installs All-Relay Interlocking 11.4 MB
1959	What’s the answer? Atomic lamps. 1959-12 194.6 KB
1917	Wigwag signals on an Electric Line 239.2 KB

Chicago, Indianapolis & Louisville 21

1932	A Detector Bar Fails 1.5 MB
1941	A Review of 1940 and Prospects for the Future 1.3 MB
1911	A Summary of Signaling Practice 3.6 MB
1917	Block Signals on the Monon 675.3 KB
1937	Broken Rails 1.1 MB
1942	Chicago, Indianapolis & Louisiville Modernizes Automatic Signaling 3.9 MB
1937	Crossing Protection on the Monon 5.0 MB
1950	Differentiation Between Signals 955.8 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1952	Interlockings Modernized at Three Railroad Crossings 974.7 KB
1927	Miller Train Control On the Monon 582.2 KB
1920	Modern Telegraph Office at Indianapolis 3.1 MB
1941	Monon Changes Approved 760.8 KB
1945	Monon Remote Control Signaling Saves Train Time 3.5 MB
1929	Monon Revamps Signals to Co-Ordinate with Automatic Train Stop 2.1 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1935	Removal of Switch Indicators 2.3 MB
1928	Should Call-On Arms Be Used? 1.0 MB
1925	The Train Control Situation 853.0 KB
1928	Train Order Indicators Used Successfully on the CI&L 604.3 KB

Chicago, Lake Shore & South Bend 2

1910	Electric Drawbridge Interlocking 1.2 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Chicago, Milwaukee & St. Paul 22

1911	A Summary of Signaling Practice 3.6 MB
1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB
1910	Construction Crew on the CM&StP 420.8 KB
1928	Continued Activity and Development in Signaling 1.1 MB
1915	Emergency Suburban Traffic 252.9 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1911	Letters to the Editor: Uniform Signaling: A reply to Mr. Rudd 1.8 MB
1917	Light Signals On CM&StP 781.9 KB
1918	Maintaining an Interlocking Plant at High Tide 241.8 KB
1917	New Interlocking Plant in Milwaukee 1.2 MB
1922	News of the Month. 1922-06 516.2 KB
1921	Non-Interlocking Non-Stop Grade Crossings 1.6 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1911	Railway Signal Association Convention: Committee I: Signaling Practice 3.8 MB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1926	Recurrent Acknowledgment at Stop Signals 961.9 KB
1916	Signaling the Milwaukee's Electric Zone 624.8 KB
1927	Smash Boards at Automatic Interlockers 423.8 KB
1920	The New Electrification on the St. Paul 485.4 KB
1925	The Train Control Situation 853.0 KB
1926	Train Control Progress in 1925 3.1 MB
1923	Train-Order Signals at Interlockers 3.6 MB

Chicago, Milwaukee, St. Paul & Pacific 96

1960	Fourteen RRs adopt new operating code 945.4 KB
1960	"Dry" message duplication saves money 234.7 KB
1943	A Review of 1942 2.9 MB
1947	Annual Review and Outlook 425.1 KB
1928	Automatic Interlockers Are Profitable Investments 3.3 MB
1935	Automatic Interlocking on the Wabash 2.9 MB
1937	Automatic Plant Replaces Mechanical Interlocking 1.3 MB
1932	B&OCT Stops Theft of Coal with Four Automatic Plants at Chicago Heights, IL 1.9 MB
1933	Call-On Signals (editorial) 1.0 MB
1943	Centralized Traffic Control on the Milwaukee 2.8 MB
1930	Color-light Automatic Block Signals and Automatic Interlocking 2.4 MB
1933	Consolidated Interlockings 1.8 MB
1932	Crossing Problem 2.6 MB
1929	Crossing Protection Installed Extensively on the Milwaukee 1.3 MB
1943	Crossing Protection on Milwaukee 5.7 MB
1939	CTC and Automatic Signals on the Rock Island 6.6 MB
1958	CTC Handles 15 More Trains 2.2 MB
1934	CTC Replaces Staff on Milwaukee 2.0 MB
1938	CTC Replaces Staff System on the Milwaukee 2.3 MB
1936	Demands for Modern Signaling 12.1 MB
1947	Developments in Signaling 498.7 KB
1961	Digital Computer Simulates CTC Dispatcher 2.8 MB
1940	Drafting Boards 1.8 MB
1922	Economy in Automatic Signal Operation as Effected by Design 376.2 KB
1931	Efficiency Tests 1.9 MB
1931	Fight for Your Job 3.0 MB
1952	Gates at Eight Street Crossings on the Milwaukee Road 503.5 KB
1933	Graphic Recorders 843.3 KB
1935	Great Western Constructs Automatic Interlocking 6.8 MB
1938	Highway Crossing Protection and Spring Switch on Milwaukee 3.2 MB
1946	ICC Signaling Investigation 770.4 KB
1939	Interconnection of Train Signals and Crossing Protection 1.1 MB
1932	Location of Home Signals 853.4 KB
1965	Midwest RRs fight the weather 914.4 KB
1949	Milwaukee Installs Automatic Block 8.2 MB
1947	Milwaukee Installs Block System on 98 Miles 1.2 MB
1945	Milwaukee Installs CTC On 51 Miles 6.5 MB
1964	Milwaukee installs its first microwave 277.4 KB
1938	Milwaukee Rehabilitates Large Plant 8.0 MB
1942	Milwaukee Replaces Mechanical Plant With All-Relay Electric Interlocking 5.7 MB
1945	Milwaukee Tests Train Communication (January) 2.0 MB
1945	Milwaukee Tests Train Communication (June) 2.4 MB
1934	Milwaukee to Use Cab Signals 699.1 KB
1939	Milwaukee Utilizes Teletype 1.6 MB
1951	More Signal Construction in 1950 1.0 MB
1955	Much is new in signaling for 1955 826.7 KB
1940	New Automatic Block Signaling on the Milwaukee 6.3 MB
1933	New Interlockers – Reversion to Single Track 418.4 KB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1960	News briefs. 1960-10 1.8 MB
1961	News briefs. 1961-07 648.9 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-12 429.2 KB
1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-09 879.4 KB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-09 381.8 KB
1937	Personal Mention: L. B. Porter 1.5 MB
1931	Preparation of Signal Circuit Plans 2.0 MB
1935	Preventing Unnecessary Operation of Highway-Railroad Crossing Signals 4.3 MB
1943	Progress in the Use of Coded Track Circuits 1.6 MB
1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB
1931	Remote Control for Interlocking Saves $6,000 Annually 328.9 KB
1931	Report on Milwaukee-Omaha Collision 1.5 MB
1932	Reverting to Single Track 646.7 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1935	Safety of High Speed Trains 5.2 MB
1929	Secure New Ordinances for Changes in Crossing Protection 691.4 KB
1938	Semi-Automatic Gates on the Milwaukee 3.2 MB
1960	Signal construction steady in 1959 385.2 KB
1935	Signaling for Higher Train Speeds 3.0 MB
1959	Signaling moderate during '58 528.6 KB
1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB
1958	Signaling to cut expenses in '58 411.4 KB
1936	Signals Installed at 26 Crossings in Dubuque, IA 13.8 MB
1951	Single Track with CTC Replaces Double Track on Milwaukee 586.0 KB
1950	Special Interlocking Controls 2.2 MB
1937	Special Locking Release 2.4 MB
1936	Speed at Automatic Plants 4.9 MB
1957	Survey shows progress in signal education 330.6 KB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1937	Switch Protection in Automatic Territory 3.0 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1936	Testing Automatic Interlockings 3.5 MB
1945	The New Connections at Kansas City For Milwaukee and Rock Island 4.7 MB
1935	The Railways' Answer to the Demand for Speed 2.8 MB
1934	The Safety Feature of Signals 456.5 KB
1937	Three Gate Crossings in a Row 4.2 MB
1939	Unusual Signal Trouble 891.9 KB
1950	Unusual Trouble 3.0 MB
1965	What's the Answer? 1965-07 629.7 KB
1960	What's the answer? Snow shields 424.6 KB
1951	What's the Answer? Stop Signals in CTC 274.3 KB
1928	Why Markers for Automatic Signals? 494.6 KB

Chicago, Rock Island & Gulf 1

1936	Reconstruction of Interlocking at the Dallas Union Terminal 14.8 MB

Chicago, Rock Island & Pacific 105

1936	34 Train Stops Eliminated Daily by an Interlocking 10.4 MB
1932	A Call-On Signal Is Different from a Stop and Proceed Signal 667.6 KB
1911	A Summary of Signaling Practice 3.6 MB
1922	A Swing Rail Crossing 557.8 KB
1935	Accident at Automatic Plant 4.5 MB
1938	Adapting Signaling to Requirements 1.7 MB
1914	All Electric Interlocking at Joliet 1.5 MB
1932	All-Relay Interlocking Installed by Rock Island 1.1 MB
1947	Annual Review and Outlook 425.1 KB
1931	Another Unique Interlocker on the Rock Island 1.4 MB
1926	Are Smash-Boards Necessary at Automatic Crossing Plants? 816.3 KB
1951	Automatic Block for Few Fast Trains 286.5 KB
1939	Automatic Cut-Outs at an Automatic Interlocking 7.6 MB
1937	Automatic Gates on the Rock Island 7.3 MB
1933	Automatic Interlocking for Drawbridge 2.0 MB
1934	Automatic Interlocking in Train Control Territory 1.5 MB
1935	Automatic OSing Devices Usde by the Rock Island 2.2 MB
1922	Automatic Train Control in Use On American Railroads 353.7 KB
1959	Burlington installs modified CTC 1.0 MB
1928	Can Preliminary Latch Locking Be Eliminated 595.1 KB
1938	Changing Relays 1.7 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1938	Clearing of Signals at Automatic Interlockings 2.2 MB
1944	Coded Track Circuits for CTC and Cab Signaling 4.0 MB
1956	Conelrad – A Civil Defense Measure … How Some Railroads are Participating 4.1 MB
1928	Continued Activity and Development in Signaling 1.1 MB
1933	Control of Switch from Locomotive Cab 1.2 MB
1932	CRI&P Extends Centralized Control 2.6 MB
1935	Crossing Bells at Flasher Signals 1.9 MB
1939	CTC and Automatic Signals on the Rock Island 6.6 MB
1955	CTC on single and double track 406.8 KB
1927	Derail Failure Results in Collision on Crossing 995.6 KB
1926	Derail Pockets for Interlocking of Crossing at Joint Passenger Station 884.6 KB
1931	Economy of Smaller Towers 539.7 KB
1936	Electric Lights for Semaphores and Train Approach Indicators on the Rock Island 8.9 MB
1932	Electric Lock on Spring Switch 399.3 KB
1938	Electric Switch Heaters at Rock Island Interlocking 1.8 MB
1915	Emergency Suburban Traffic 252.9 KB
1916	Government Drawbridge Signaling 670.2 KB
1939	ICC Approves Automatic Interlocking to Replace Mechanical Plant 1.0 MB
1947	ICC Holds Signal Hearing 507.5 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1947	ICC Signal Hearings 179.7 KB
1950	Increasing Use of Carrier 1.3 MB
1965	Indication locking inadequate says ICC in report 849.9 KB
1932	Location of Home Signals 853.4 KB
1950	Microwaves on Railroads 1.3 MB
1965	Midwest RRs fight the weather 914.4 KB
1964	MP interlocking uses solid-state control system 410.9 KB
1955	Much is new in signaling for 1955 826.7 KB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1960	News briefs. 1960-05 1.0 MB
1961	News briefs. 1961-01 761.9 KB
1961	News briefs. 1961-10 1.0 MB
1963	News briefs. 1963-01 951.3 KB
1922	News of the Month. 1922-06 516.2 KB
1922	News of the Month. 1922-07 360.7 KB
1922	News of the Month. 1922-12 388.1 KB
1929	NYC Expands Electric Plant By Adding 48 Levers 2.7 MB
1940	Obituary: Leroy Wyant 1.0 MB
1934	Observance of Signal Indications, How Secured 1.0 MB
1946	Polarized Coded Track and Control Circuits On the Rock Island 3.4 MB
1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1911	Railway Signal Association Convention: Committee I: Signaling Practice 3.8 MB
1910	Reconstruction of Burnside Interlocking 863.7 KB
1933	Reducing Unnecessary Train Stops 2.5 MB
1911	Relay Shipping Case 1.1 MB
1948	Rock Island Adapts CTC to Medium-Traffic Single-Track Line 1.3 MB
1928	Rock Island Completes 33-Lever Electric Interlocker 2.8 MB
1946	Rock Island Develops a Unique System of Single-Track Station-to Station Automatic Block Based on Coded Track Circuits Without Line Wires 8.3 MB
1937	Rock Island Installs Automatic Blocks 10.1 MB
1944	Rock Island Installs Cab Signaling and Centralized Traffic Control 10.0 MB
1924	Rock Island Installs Train Control 847.9 KB
1937	Rock Island Petitions Removal of Train Control 1.4 MB
1917	Rock Island Signaling on the Chicago Terminal 1.2 MB
1946	Rock Island Uses Carrier Equipment for Automatic OS Reports 3.9 MB
1929	Rock Island Uses Novel System for Operation by Signal Indication 1.7 MB
1937	Rocket Train Telephones 5.7 MB
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1953	Route Lever Interlocking on Rock Island 6.5 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1929	Secure New Ordinances for Changes in Crossing Protection 691.4 KB
1933	Shortening Masts 879.8 KB
1928	Should Call-On Arms Be Used? 1.0 MB
1929	Signal Aspects at End of Double Track 514.3 KB
1960	Signal construction steady in 1959 385.2 KB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB
1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB
1958	Signaling to cut expenses in '58 411.4 KB
1936	Speed at Automatic Plants 4.9 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1930	The Rock Island Develops Unique Interlocker with No Mechanical Locking 2.4 MB
1954	This Automatic Block Is Different 3.3 MB
1949	Train Indicator for Motor Car 1.0 MB
1931	Twelve-Track Yard Indicator on the Rock Island 888.5 KB
1934	Use of Dwarf Calling-On Signals 1.0 MB
1956	Walkie-Talkies 1.5 MB
1935	Western Indiana Installs All-Relay Interlocking 11.4 MB
1955	What's the Answer? CTC Into Service 409.5 KB
1951	What's the Answer? Stop Signals in CTC 274.3 KB
1958	What’s the answer? Interlocking check 175.3 KB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB

Chicago, St. Paul, Minneapolis & Omaha 7

1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1947	ICC Signal Hearings 179.7 KB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1931	Report on Milwaukee-Omaha Collision 1.5 MB
1932	Smashboard Mechanisms 1.7 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB

Chickasha, OK 1

1947	ICC Signal Hearings 179.7 KB

Chiles, KY 2

1960	News briefs. 1960-09 756.9 KB
1930	Signal Indications Direct Trains on the Paducah & Illinois 5.0 MB

Chillicothe, IL 2

1927	Santa Fe Is Operating Trains by Cab Signaling With Train Control 6.4 MB
1926	Train Control Progress in 1925 3.1 MB

Chillicothe, MO 1

1945	Milwaukee Installs CTC On 51 Miles 6.5 MB

Chillicothe, OH 1

1959	News briefs. 1959-05 506.5 KB

Chippewa Falls, WI 1

1961	News briefs. 1961-10 1.0 MB

Chrisman, IL 1

1960	News briefs. 1960-03 1.9 MB

Christiansburg, VA 1

1960	Signaling enters automation 630.7 KB

Chrystie St., New York, NY 1

1963	News briefs. 1963-12 429.2 KB

Church, IL 1

1962	News briefs. 1962-06 989.1 KB

Churchill, William 1

1915	Red as a Danger Indication 283.5 KB

Cicero, IL 5

1958	Automatic classification yard in service on the Burlington at Chicago 2.9 MB
1956	Automatic Crossing Gates on CTA Are Interconnected with Street Traffic Lights 5.1 MB
1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB
1954	New Wayside and Cab Signaling 753.2 KB
1959	Signaling moderate during '58 528.6 KB

Cincinnati Union Terminal 3

1947	Choice of Interlocking Control Machines 266.5 KB
1933	Cincinnati Terminal Interlocking 4.1 MB
1937	Ohio Flood Damages Signaling 9.7 MB

Cincinnati, Hamilton & Dayton 1

1911	A Summary of Signaling Practice 3.6 MB

Cincinnati, Indianapolis & Western 3

1922	Automatic Train Control in Use On American Railroads 353.7 KB
1920	Modern Telegraph Office at Indianapolis 3.1 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB

Cincinnati, New Orleans & Texas Pacific 5

1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1960	News briefs. 1960-11 875.5 KB
1927	Protecting Main Line Switches 486.2 KB
1925	The Train Control Situation 853.0 KB
1926	Train Control Progress in 1925 3.1 MB

Cincinnati, OH 15

1951	B&O Installs Modern Interlocking 871.3 KB
1930	C&O Installs New Interlocking and Either-Direction Signaling 5.0 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1933	Cincinnati Terminal Interlocking 4.1 MB
1953	Control of Four Layouts Consolidated in One Interlocking 5.3 MB
1960	CTC signals clear automatically 1.1 MB
1934	Electric Interlocking on the B&O 1.1 MB
1960	From the field 945.2 KB
1955	Much is new in signaling for 1955 826.7 KB
1922	New Signaling on the Big Four 717.4 KB
1961	News briefs. 1961-07 648.9 KB
1937	Ohio Flood Damages Signaling 9.7 MB
1924	Three Train Control Contracts Let 1.9 MB
1954	Unique Combinations of Single-Track and Two-Track Developed on the Southern 3.8 MB
1964	What CTC Can Do For You 417.8 KB

circuit design 1

1939	Safety and Design of Signal Circuits 5.0 MB

circuit plans 12

1962	Automatic Dispatching 2.1 MB
1960	CNR uses speed selection for gates 980.7 KB
1937	Drawings of Relay and Junction Box Details 1.0 MB
1959	Kinks. 1959-11 258.3 KB
1959	Santa Fe CTCs double track line 2.2 MB
1958	Santa Fe tests AF track circuits 1.6 MB
1963	Special Report: P&LE Signaling and Communications 3.9 MB
1935	Standardization of Circuit Plans for Highway Crossing Signals 4.5 MB
1960	What's the answer? AC track circuits 281.9 KB
1958	What's the answer? Crossing circuits 254.4 KB
1958	What's the answer? Long dead sections 571.9 KB
1960	What’s the answer? Automatic OS 354.1 KB

circuits 16

1921	A New Idea in Traffic Locking On the C&O 1.7 MB
1943	A Review of 1942 2.9 MB
1920	A Special Circuit Saves Money 394.1 KB
1921	Absolute Permissive Block Signal System 1.2 MB
1948	All-Relay Interlocking on New Haven 1.2 MB
1935	Auto Stop Installed on C&NW 7.2 MB
1917	Block Signals on the Monon 675.3 KB
1943	Change-Over Circuits 739.0 KB
1935	Circuit for Flashing Light Signals 3.5 MB
1935	Circuit for Flashing Light Signals 3.6 MB
1935	Circuits for Crossing Signals 1.5 MB
1949	Controlled Overlaps for Single-Track APB Signaling 1.5 MB
1927	Design a Circuit to Obtain the Desired Operation of the Call-On Arms 602.2 KB
1954	New Wayside and Cab Signaling 753.2 KB
1937	Route Locking Circuits 1.9 MB
1911	Symbols and Nomenclature for Written Circuits 2.3 MB

civil defense 1

1956	Conelrad – A Civil Defense Measure … How Some Railroads are Participating 4.1 MB

Clagg, KY 1

1941	Pennsylvania Installs CTC at Louisville, KY 4.9 MB

Clapper, MO 1

1945	Manual Block-Remote Control Developed On the Wabash 5.7 MB

Clar, MO 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Clara Street, New Orleans, LA 1

1954	New Orleans Passenger Terminal 4.7 MB

Clare, OH 1

1955	News briefs. 1955-08 830.4 KB

Claremore, OK 1

1922	News of the Month. 1922-08 394.0 KB

Clark St., Chicago, IL 1

1913	Illinois Central Alternating Current Signaling 2.5 MB

Clark, MO 1

1963	News briefs. 1963-06 961.3 KB

classification yard 11

1958	Central opens Young Yard 2.5 MB
1958	News briefs. 1958-01 1.8 MB
1960	News briefs. 1960-07 845.4 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-07 494.2 KB
1962	News briefs. 1962-08 675.9 KB
1962	News briefs. 1962-09 838.3 KB
1965	News briefs. 1965-06 1.2 MB
1965	PRR converts two hump yards 630.5 KB
1915	The Push Button Interlocking Plant at Clearing Yard 351.3 KB

classification yards 12

1959	Britain's first automatic yard 312.0 KB
1959	Communications is everywhere at P&LE's Gateway Yard in Youngstown, Ohio 2.1 MB
1960	Gangs do signal maintenance 309.7 KB
1959	How retarder controls function at Young Yard on the NYC 978.1 KB
1950	IC Rebuilds Classification Yard 6.9 MB
1959	Mobile lab evaluates class yards 830.6 KB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-11 875.5 KB
1944	Railroad Applications of Electronics 1.9 MB
1960	Signal construction steady in 1959 385.2 KB
1959	Signaling moderate during '58 528.6 KB
1959	Signaling: 1960 225.2 KB

Claus, W. H. 2

1949	Controlled Overlaps for Single-Track APB Signaling 1.5 MB
1945	William H. Claus (promotion) 425.7 KB

Clausen, L. R. 1

1911	Letters to the Editor: Uniform Signaling: A reply to Mr. Rudd 1.8 MB

Clay Center, KS 1

1946	Rock Island Uses Carrier Equipment for Automatic OS Reports 3.9 MB

cleaning 1

1940	Signal Lens Cleaner 1.1 MB

Clearing Yard, Chicago, IL 3

1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1940	Interlockings Installed at Two Crossings 6.5 MB
1964	News briefs. 1964-05 1.0 MB

Clearing, Chicago, IL 1

1957	Relay Interlocking Saves Time at Yard Entrances 2.5 MB

Clearing, IL 1

1915	The Push Button Interlocking Plant at Clearing Yard 351.3 KB

Cleveland Transit System 2

1955	New Cleveland Transit System 917.8 KB
1962	News briefs. 1962-07 494.2 KB

Cleveland Union Terminal 4

1929	Elimination of Lock Rods 947.9 KB
1930	Interlocking at the Cleveland Union Terminal 7.8 MB
1930	Is Indication Locking Needed? 479.0 KB
1930	Unique Development at the Cleveland Interlocking 1.0 MB

Cleveland Union Terminal, Cleveland, OH 1

1955	New Cleveland Transit System 917.8 KB

Cleveland, Cincinnati, Chicago & St. Louis 36

1932	A Detector Bar Fails 1.5 MB
1927	Another APB Circuit Explanation 652.9 KB
1929	Big Four Improves Operation by Remote Control 2.5 MB
1930	Big Four Installs Simplified Interlocking With No Mechanical Locking 2.6 MB
1932	Big Four Uses Centralized Control For Remote Interlocking 1.8 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1933	Dwarf Signal Locking 991.7 KB
1931	Economy of Smaller Towers 539.7 KB
1931	Efficiency Tests 1.9 MB
1929	Electric Approach and Stick Locking Features 866.2 KB
1920	Electric Interlocking at Bellefontaine, Ohio 3.8 MB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1937	Illumination as a Type of Crossing Protection 3.0 MB
1932	Improper Forestalling 669.7 KB
1927	Is Approach Lighting of Signals Really Economical? 1.2 MB
1929	Manual Block Signals Controlled Remotely on the Big Four 1.1 MB
1940	Mechanical Plant Modernized 4.2 MB
1957	More automation for signaling in 1957 1.2 MB
1922	New Signaling on the Big Four 717.4 KB
1922	News of the Month. 1922-01 315.5 KB
1923	News of the Month. 1923-10 1.9 MB
1937	Ohio Flood Damages Signaling 9.7 MB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1939	Recording Burning Time of Electric Lights 900.6 KB
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1931	Sequence of Levers 552.2 KB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB
1930	Signal Aspects for a Four Block System 2.8 MB
1933	Simplified Interlocking Installed at the Dayton Terminal 700.6 KB
1932	Track Capacity 402.2 KB
1926	Train Control Progress in 1925 3.1 MB
1923	Train Operation Against Traffic 4.5 MB
1923	Train-Order Signals at Interlockers 3.6 MB
1920	What Scheme of Signaling is Most Desirable? 6.8 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Cleveland, OH 12

1947	Choice of Interlocking Control Machines 266.5 KB
1959	CTC discussed at AIEE meeting 445.2 KB
1930	Interlocking at the Cleveland Union Terminal 7.8 MB
1957	More automation for signaling in 1957 1.2 MB
1955	New Cleveland Transit System 917.8 KB
1922	New Signaling on the Big Four 717.4 KB
1964	NYC Moves CTC Point of Control 1.2 MB
1959	Signaling moderate during '58 528.6 KB
1958	Signaling to cut expenses in '58 411.4 KB
1935	Traffic Type Signals for Protection of Highway-Railroad Crossings 2.5 MB
1949	Train Operation By Signal Inidication Used Extensively on the Nickel Plate 6.1 MB
1930	Unique Development at the Cleveland Interlocking 1.0 MB

Clifton Forge, VA 5

1928	C&O Signaling and Train Control Facilitate Operation 4.1 MB
1935	Centralized Traffic Control on the Chesapeake & Ohio 6.2 MB
1926	Economics of Single Track Signals 2.0 MB
1963	News briefs. 1963-03 790.6 KB
1965	News briefs. 1965-08 749.4 KB

Clifton Forge, WV 1

1960	News briefs. 1960-05 1.0 MB

Clifton Jct., NY 1

1934	Electric Interlocking on Staten Island Lines of the Baltimore & Ohio 1.2 MB

Clifton Park, MD 1

1955	News briefs. 1955-08 830.4 KB

Clifton, IL 1

1923	News of the Month. 1923-07 1.9 MB

Clinchfield 7

1953	CTC Keeps Trains Moving on Long Grades 6.3 MB
1960	Long-distance hot box detection 861.0 KB
1958	News briefs. 1958-01 1.8 MB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1950	Train Movements by Signal Indication On the Clinchfield Route 12.0 MB
1958	What's the answer? CTC locking 269.2 KB
1960	What's the answer? Route signaling 547.7 KB

Clinton Jct., WI 1

1913	New Block Signaling on the North-Western 1.8 MB

Clinton Street, Chicago, IL 3

1911	Interlocking on the North Western Terminal 7.6 MB
1925	Maintenance on C&NW Terminals 12.5 MB
1911	Signaling and Interlocking on the North Western Terminal in Chicago 1.1 MB

Clinton, IA 3

1958	Crossing protection program saves 59% 553.4 KB
1934	Economy in Operation of Track Circuits 554.1 KB
1965	Midwest RRs fight the weather 914.4 KB

Clinton, IN 1

1948	CTC Keeps ‘em Rollin’ on C&EI 2.1 MB

Clintonville, IL 1

1917	Wigwag signals on an Electric Line 239.2 KB

Cloud, A. D. 1

1958	Six editors in 50 years 253.5 KB

Clovis, NM 2

1945	CTC West of the Pecos On the Santa Fe 4.6 MB
1961	News briefs. 1961-12 978.0 KB

Clybourn, Chicago, IL 1

1961	Check Switch Heaters Now 297.3 KB

Clyde, IL 1

1918	New Electric Interlocking at Clyde, IL 418.7 KB

Clyde, TX 1

1960	T&P moves CTC machine 78 miles 423.0 KB

Clyffeside, KY 1

1957	One Machine Controls Two Plants 2.2 MB

Clymers, IN 1

1965	News briefs. 1965-09 381.8 KB

CM Cabin, East Liberty, PA 1

1937	Remote Control on the Pennsylvania 5.2 MB

Coalhurst, Alberta 1

1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB

Cobourg, ON 1

1934	Remote Control Replaces Mechanical Interlocking on Canadian Pacific 1.9 MB

Cocoa, FL 2

1964	News briefs. 1964-12 981.5 KB
1965	News briefs. 1965-10 1.1 MB

code control 4

1947	Application of Code Principles to Signaling 406.6 KB
1958	DL&W-Erie joint operation is ready to go 643.6 KB
1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1958	Remote control saves money 868.5 KB

code line 8

1935	Aerial Cable Versus Open Line 3.9 MB
1950	CTC Code Lines 1.1 MB
1957	CTC on the SP has special devices 518.8 KB
1950	L&N Extends CTC on "EK" 10.4 MB
1958	MP consolidates CTC machines 797.2 KB
1956	Remote Control Converted to CTC 6.6 MB
1959	Santa Fe CTCs double track line 2.2 MB
1963	Special Report: P&LE Signaling and Communications 3.9 MB

code line failure 2

1956	Train Operations When CTC Fails 3.5 MB
1956	Train Operations When CTC Fails 2.4 MB

code line units 1

1950	New Developments 16.9 MB

code transmitter 2

1940	Coded Track Control 2.5 MB
1940	New Code Transmitter 2.1 MB

code transmitters 2

1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB
1937	New Devices- March 1937 18.1 MB

code-following relay 1

1940	Coded Track Control 2.5 MB

code-following track relay 1

1941	P4 Code-Following Relay 1.1 MB

coded cab signaling 3

1947	Application of Code Principles to Signaling 406.6 KB
1954	Modern Signaling in New Subways in Stockholm, Sweden 6.7 MB
1937	New Devices- March 1937 18.1 MB

coded cab signals 1

1961	News briefs. 1961-04 1.5 MB

coded carrier 5

1943	A Review of 1942 2.9 MB
1943	Centralized Traffic Control Installed On 64.6 Miles of the Seaboard 7.1 MB
1959	CTC discussed at AIEE meeting 445.2 KB
1944	Electronics In Signaling 709.8 KB
1944	N&W Installs CTC on Shenandoah Valley Line 10.2 MB

coded carrier control 1

1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB

coded control 6

1947	CTC Down by the Ohio 2.7 MB
1964	Interlocking: New Solid State Coding System Is Fast 1.7 MB
1964	MP interlocking uses solid-state control system 410.9 KB
1937	Pennsylvania CTC Installation 7.0 MB
1937	Remote Control By Code 7.0 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB

coded remote control 1

1950	New Developments 16.9 MB

coded track circuits 55

1940	11,000-Ft. Coded Track Circuits 13.6 MB
1940	A Review of 1939 and a Glance Into 1940 1.6 MB
1943	A Review of 1942 2.9 MB
1947	All-Relay Interlocking Replaces Mechanical Plant 1.5 MB
1951	Automatic Block for Few Fast Trains 286.5 KB
1951	Automatic Block Without Line Wires on the Kansas City Southern 723.0 KB
1957	Bessemer takes up second track and installs Centralized Traffic Control 706.4 KB
1951	Both Tracks Both Ways on Norfolk & Western 623.5 KB
1959	Burlington installs modified CTC 1.0 MB
1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1951	Cab signal system 455.8 KB
1946	Catch Up With Progress 450.6 KB
1949	Coast Line Replaces Signaling On Engine District 8.1 MB
1941	Code-Following Polar Track Circuit Relay 1.4 MB
1940	Coded Signaling Control System on the Norfolk & Western 10.0 MB
1936	Coded Track Circuit 4.1 MB
1935	Coded Track Circuit Control 1.5 MB
1935	Coded Track Circuit Signaling on the Pennsylvania 9.8 MB
1949	Coded Track Circuits 1.1 MB
1944	Coded Track Circuits for CTC and Cab Signaling 4.0 MB
1940	Coded Track Control 2.5 MB
1943	Continuously Coded Local Line Wire Signal Control Circuits 4.5 MB
1955	CTC and cab signaling on Union Pacific 789.5 KB
1948	CTC Big Help to GM&O 1.7 MB
1959	CTC discussed at AIEE meeting 445.2 KB
1955	CTC moves trains on grades 762.8 KB
1943	CTC on the Bessemer & Lake Erie 8.7 MB
1958	CTC saves time and money for the Louisville & Nashville 446.6 KB
1947	Developments in Signaling 498.7 KB
1949	Milwaukee Installs Automatic Block 8.2 MB
1950	Modern Signaling Systems On Western Pacific 16.1 MB
1943	Modernization of Automatic Signaling On the New York Central 9.8 MB
1957	New control system for automatic block uses track circuits only 1.8 MB
1936	New Electro-Pneumatic Plant On Pennsylvania at Newark 23.9 MB
1943	New Haven Installs Five-Aspect Signaling Controlled By Coded Track Circuits 7.4 MB
1951	New NYC Interlocking Controlled by Synchrostep 1.2 MB
1944	New York Central Installs Coded Track Circuits 3.9 MB
1955	News briefs. 1955-08 830.4 KB
1958	One track does work of two on Maine Central 442.6 KB
1944	Pennsylvania Installs CTC On 53 Miles of Busy Single Track 8.5 MB
1935	Pole Lines for Automatic Signaling 1.6 MB
1943	Progress in the Use of Coded Track Circuits 1.6 MB
1944	Railroad Applications of Electronics 1.9 MB
1942	Railroad Signals Go to War 11.4 MB
1936	Remote Control on the Pennsylvania 14.5 MB
1958	Remote control saves money 868.5 KB
1944	Rock Island Installs Cab Signaling and Centralized Traffic Control 10.0 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1955	Santa Fe installs CTC on single track 610.2 KB
1957	Signal controls by track circuit only 575.8 KB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB
1944	Signaling Construction Increased in 1943 8.8 MB
1944	Signaling Modernized On the Pittsburgh & Lake Erie 4.7 MB
1958	Special combinations of single-track and two-track replace double track on the Southern 960.9 KB
1960	Subway train is automatic 552.2 KB

Coffeyville, KS 1

1937	Illumination as a Type of Crossing Protection 3.0 MB

Cohoes, NY 3

1959	D&H upgrades crossing protection 626.4 KB
1962	News briefs. 1962-03 1.1 MB
1960	Signal construction steady in 1959 385.2 KB

Colchester, VA 1

1955	How to run reverse temporarily 197.6 KB

Cold Springs, OH 1

1940	Mechanical Plant Modernized 4.2 MB

Cole, MO 1

1941	Centralized Traffic Control Installed on the Missouri Pacific 3.7 MB

Colehour, IN 1

1965	News briefs. 1965-01 2.0 MB

Coleman, FL 2

1947	Annual Review and Outlook 425.1 KB
1963	News briefs. 1963-11 1.4 MB

College Park, San Jose, CA 1

1939	Trains Directed by Signal Indication at San Jose, California 4.1 MB

Collins, IA 1

1959	Signaling moderate during '58 528.6 KB

Collinwood, OH 2

1930	NYC Makes Rapid Cut-Over on Large Plant at Cleveland 1.3 MB
1964	NYC Moves CTC Point of Control 1.2 MB

Colmar, PA 1

1963	News briefs. 1963-10 497.4 KB

Colonie, NY 1

1965	News briefs. 1965-01 2.0 MB

color blindness 1

1909	Color Sense and Railway Signal Lights 1.7 MB

color light signaling 4

1951	Extension of Color-Light Signaling on the Bombay, Baroda & Central India Railway 524.0 KB
1917	Flash-Light crossing signal 906.0 KB
1924	Neon – A New Gas for Electrical Use 1.8 MB
1922	News of the Month. 1922-10 368.4 KB

color light signals 50

1921	A New Light Signal 1.4 MB
1924	A New Triangular Light Signal 1.7 MB
1938	AC Primary on the Katy 442.5 KB
1936	Alining Signals on Curves 3.7 MB
1947	Annual Review and Outlook 425.1 KB
1947	Automatic Block With Spring Switches installed on the Georgia Railroad 851.4 KB
1958	Automatic classification yard in service on the Burlington at Chicago 2.9 MB
1947	Automatic Signaling With Spring Switches Installed on the Great Northern 734.1 KB
1935	Avoiding Light-Out Signal Failures 2.2 MB
1935	Avoiding Light-Out Signal Failures 1.2 MB
1936	Back Locks on Approach Signals 1.4 MB
1922	British Report on Light Signals 449.7 KB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1937	Color Light Signals Replace Semaphores on Union Pacific 4.2 MB
1949	CTC Increases Capacity of Single-Track Freight Line Handling Heavy Traffic 6.1 MB
1958	DL&W-Erie joint operation is ready to go 643.6 KB
1937	Height of Light Signals 1.0 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1958	Improved signaling results from grade elimination 883.1 KB
1957	Lehigh Valley combines interlockings 404.0 KB
1917	Light Signals On CM&StP 781.9 KB
1944	Light-Type Signals Installed on the Reading 6.3 MB
1936	Lights Interfere With View of Signals 2.3 MB
1935	Mechanical Color Light Signals in England 1.3 MB
1935	New Signaling on the Route of the C&NW "400" 9.6 MB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-07 494.2 KB
1922	News of the Month. 1922-04 613.8 KB
1922	News of the Month. 1922-06 516.2 KB
1922	News of the Month. 1922-07 360.7 KB
1922	News of the Month. 1922-08 394.0 KB
1922	News of the Month. 1922-09 562.2 KB
1922	News of the Month. 1922-10 368.4 KB
1935	Night Check of Signal Lights 1.2 MB
1935	Night Intensity of Signal Lamps 2.6 MB
1939	Phantom Indications in Color-Light Signals 2.2 MB
1937	Phantom Indications of Dwarfs 1.3 MB
1921	Progress of Railroad Signaling in America 731.8 KB
1915	Red as a Danger Indication 283.5 KB
1922	Report of Committee X - Signaling Practice 1.4 MB
1965	Rhodesia has 1215 miles of CTC 949.2 KB
1937	Rock Island Installs Automatic Blocks 10.1 MB
1961	Santa Fe Signals New Main Line 913.2 KB
1913	Settled at Last 824.8 KB
1940	Signal Lens Cleaner 1.1 MB
1911	Signaling on the New York Tunnel Extension of the Pennsylvania 1.0 MB
1951	Simple Interlocking Saves Many Train Stops 375.6 KB
1958	Subway consolidates interlockings 2.2 MB
1950	Train Movements by Signal Indication On the Clinchfield Route 12.0 MB
1955	Unusual control for crossing protection 722.1 KB

color position light signals 15

1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB
1925	B&O Color-Position-Light Signals 3.7 MB
1950	B&O Installs All-Relay Plant 2.6 MB
1951	B&O Installs Modern Interlocking 871.3 KB
1954	CTC Moves Heavy Trains 4.1 MB
1952	CTC Pays Its Way on B&O 733.2 KB
1924	Hall Position Color Light Signal 710.8 KB
1958	Improved signaling results from grade elimination 883.1 KB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB
1922	Lights vs. Arms for Railway Signaling 4.6 MB
1935	Multiple Aspect Signaling 3.3 MB
1928	Obituary: Frank P. Patenall 627.0 KB
1951	On the Baltimore & Ohio New Interlocking Speeds Trains 641.0 KB
1951	Simple Interlocking Saves Many Train Stops 375.6 KB
1927	The Color Position Light Signal (poem) 435.2 KB

color specifications 3

1949	A Century of Signal Glass Developments 4.2 MB
1935	Purple Signal Glasses 3.6 MB
1935	Purple Signal Glasses 3.3 MB

color vision 1

1909	Color Sense and Railway Signal Lights 1.7 MB

Colorado & Southern 5

1939	Checking Track Circuits From a Motor Car 837.6 KB
1935	Installation of Bond Wires 4.0 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1960	What’s the answer? Automatic OS 354.1 KB

Colores, WY 1

1955	CTC and cab signaling on Union Pacific 789.5 KB

Colton, CA 4

1962	Automatic Dispatching 2.1 MB
1950	CTC on Sunset Route 3.1 MB
1957	How long sidings save train time 465.2 KB
1945	Southern Pacific Installs CTC on 72 Miles of Single Track 5.6 MB

Columbia River, WA 1

1965	News briefs. 1965-09 381.8 KB

Columbia, LA 1

1922	News of the Month. 1922-04 613.8 KB

Columbia, PA 2

1938	Interlocking Changes on the Pennsylvania 4.9 MB
1937	New Signaling on Pennsylvania 1.0 MB

Columbia, SC 1

1937	Seaboard Utilizes Spring Switches 8.4 MB

Columbus & Greenville 1

1947	Territories Involved in the ICC Signaling Order 388.2 KB

Columbus, GA 2

1946	Automatic Block With Spring Switches on the Central of Georgia 5.3 MB
1959	Signaling moderate during '58 528.6 KB

Columbus, NE 1

1937	Color Light Signals Replace Semaphores on Union Pacific 4.2 MB

Columbus, OH 8

1960	CTC signals clear automatically 1.1 MB
1945	Extensive All-Relay Interlocking Features Plug-In Relays 5.6 MB
1965	News briefs. 1965-01 2.0 MB
1955	Pennsylvania installs wayside equipment for cab signaling 745.7 KB
1965	PRR upgrades yard, improves service 1.2 MB
1956	Remote Control Converted to CTC 6.6 MB
1950	Remote Control of Center Sidings On Busy Double-Track Line 3.6 MB
1925	Traffic Reversal on Double Track by Signal Indication 1.5 MB

communication 10

1962	1962 outlook 3.0 MB
1919	Block Signaling Practice on a British Railway (Part 3) 337.3 KB
1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB
1950	Centralized Train Dispatching 1.4 MB
1950	Increase In Train Communication Systems 2.4 MB
1956	Interlocking Phones 2.3 MB
1950	More Communications Needed With the 40-Hour Week 1.2 MB
1950	Reservations Communication System Installed On the Pennsylvania 3.9 MB
1950	Telephones at Signals 1.1 MB
1950	Unusual Trouble 3.0 MB

communication circuits 1

1935	Pole Lines for Automatic Signaling 1.6 MB

communication equipment 1

1965	Midwest RRs fight the weather 914.4 KB

communication trouble 2

1949	Communications Trouble 2.0 MB
1950	Unusual Trouble 3.0 MB

communications 1

1961	Single Cable System Proposed for Signal and Communications Circuits 808.3 KB

Communipaw, NJ 1

1915	Jersey City Terminal Interlocking 1.1 MB

compact control center 1

1958	Product news: Compact control center 231.1 KB

compact CTC machines 1

1958	Signaling to cut expenses in '58 411.4 KB

compact pushbutton dispatching 1

1964	What CTC Can Do For You 417.8 KB

compensators 2

1915	Compensation of Pipe Lines 319.6 KB
1911	The Mechanics of the Compensator 1.8 MB

computer dispatching 1

1961	Digital Computer Simulates CTC Dispatcher 2.8 MB

computer simulation of centralized traffic control 1

1962	Toronto Railway Conference – Automatic Train Operation 448.4 KB

computerization 5

1960	Applying ferrites to signal systems 1.5 MB
1960	Automation on the Russian railroads 695.9 KB
1959	How railroads use computers 339.6 KB
1956	No Waiting for Reservations 6.3 MB
1960	Planning the C&O's CLIC – The economics of data communications 1.1 MB

computerized reservations 1

1950	Reservations Communication System Installed On the Pennsylvania 3.9 MB

computers 3

1960	Computer analyzes train operation 1.2 MB
1959	Computer simulates train operation 524.0 KB
1959	How retarder controls function at Young Yard on the NYC 978.1 KB

computers in signaling 2

1964	How computers may be applied 1.2 MB
1959	How railroads use computers 339.6 KB

Concord, CA 1

1965	Japan, Sweden, England test ATO 6.3 MB

Concord, IL 1

1929	Centralized Control Used for Ends of Double Track 2.1 MB

Concord, MA 1

1951	CTC on Single Track Permits Removal of Second Main on 22.4 Miles on Boston & Maine 924.4 KB

Concord, NH 3

1951	Double Track to Single With CTC 197.9 KB
1966	News briefs. 1966-01 1.4 MB
1959	Signaling moderate during '58 528.6 KB

concrete bungalows 1

1965	Midwest RRs fight the weather 914.4 KB

Cone, L. 1

1928	Changes on the C&NW 978.4 KB

Confluence, PA 1

1961	News briefs. 1961-07 648.9 KB

Congo, MO 1

1962	News briefs. 1962-02 1.4 MB

Congress Park, Brookfield, IL 1

1947	Burlington Uses Radio on Switchers 909.1 KB

Congress Park, IL 1

1954	New Wayside and Cab Signaling 753.2 KB

Conklin, IL 1

1962	News briefs. 1962-07 494.2 KB

Conklin, NY 1

1961	News briefs. 1961-07 648.9 KB

Conmee, Ontario 1

1955	How CN increased track capacity 516.4 KB

Conneaut, OH 3

1957	Bessemer takes up second track and installs Centralized Traffic Control 706.4 KB
1943	CTC on the Bessemer & Lake Erie 8.7 MB
1928	Nickel Plate Installs 169 Miles of Color Light Automatics 3.6 MB

Connellsville, PA 4

1922	An Old Electric Interlocking in France 1.3 MB
1963	News briefs. 1963-10 497.4 KB
1951	P&WV Signals Entire Main Line 3.9 MB
1955	Yard operations improved by new interlocking and car retarders 621.2 KB

Consolidated Code of Operating Rules 1

1960	Fourteen RRs adopt new operating code 945.4 KB

consolidated dispatching 6

1962	Centralization – Dispatch Circuits Are Changing 1.3 MB
1965	Merging divisions require changing circuits 335.5 KB
1958	MP consolidates CTC machines 797.2 KB
1964	NYC Moves CTC Point of Control 1.2 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB
1964	What CTC Can Do For You 417.8 KB

consolidation of interlocking plants 1

1962	1962 outlook 3.0 MB

consolidation of interlocking towers 1

1957	More automation for signaling in 1957 1.2 MB

construction 1

1922	Signal Construction on the Santa Fe 797.6 KB

Contentnea, NC 1

1961	News briefs. 1961-04 1.5 MB

continuous inductive receiver coils 1

1950	New Developments 16.9 MB

control machines 1

1962	Control Panels 243.4 KB

controlled automatic block signaling 2

1947	Developments in Signaling 498.7 KB
1947	Milwaukee Installs Block System on 98 Miles 1.2 MB

controlled manual block 3

1915	Extension of New Haven signals 684.8 KB
1909	First Annual Report of the Block Signal and Train Control Board to the Interstate Commerce Commission 4.0 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

controlled manual block signaling 4

1947	Annual Review and Outlook 425.1 KB
1924	Controlled Manual Block Signaling With Train Control 5.5 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1911	Summary of Recent Progress in Signaling 4.4 MB

Conway, PA 1

1957	Automation yard control on the Pennsylvania 882.0 KB

Coon Rapids, IA 1

1964	Milwaukee installs its first microwave 277.4 KB

Coraopolis, PA 1

1955	CTC enables P&LE to remove fourth main track 515.3 KB

Corbin, KY 4

1958	CTC saves time and money for the Louisville & Nashville 446.6 KB
1963	News briefs. 1963-04 896.6 KB
1964	News briefs. 1964-02 992.4 KB
1965	News briefs. 1965-01 2.0 MB

Corcoran, J. J. 1

1940	Personal: Changes on the New York Central 2.2 MB

Corcoran, L. L. 1

1937	Changes on the New York Central Lines 2.3 MB

Corfu, NY 1

1943	Modernization of Automatic Signaling On the New York Central 9.8 MB

Corlette, WY 1

1955	CTC and cab signaling on Union Pacific 789.5 KB

Corliss, WI 1

1918	Record Snowstorms Paralyze Transportation 424.7 KB

Corning Glass Center 1

1951	Glass Library and Museum 319.8 KB

Corning Glass Works 5

1949	A Century of Signal Glass Developments 4.2 MB
1951	Glass Library and Museum 319.8 KB
1915	Glass Standardization for Railway Signaling 1.0 MB
1915	Red as a Danger Indication 283.5 KB
1916	Service Record of Position-Light Signals 580.8 KB

Corning, NY 3

1958	DL&W-Erie joint operation is ready to go 643.6 KB
1951	Glass Library and Museum 319.8 KB
1960	Signaling enters automation 630.7 KB

Cornwall, NY 1

1940	CTC on the New York, Ontario & Western 8.2 MB

Cornwall, Ontario 1

1957	Seaway diverts CN mainline 532.3 KB

Corona, CA 1

1922	Signal Construction on the Santa Fe 797.6 KB

Corporal, CA 1

1959	News briefs. 1959-05 506.5 KB

Corry, PA 1

1962	News briefs. 1962-03 1.1 MB

Corsicana, TX 1

1957	Why Cotton Belt installed CTC on entire main line 914.0 KB

Cortland, NY 1

1951	Automatic-Manual Control for Gates at Five Crossings 418.2 KB

Cortlandt St., New York, NY 1

1917	New York Elevated Signal Improvements 418.8 KB

Corwith, IL 2

1917	New Plant in Chicago Terminal District 591.7 KB
1926	Train Control Progress in 1925 3.1 MB

Cory, IL 1

1947	All-Relay Plant on the C&EI at Danville, Ill 915.6 KB

Cos Cob, CT 1

1915	Extension of New Haven signals 684.8 KB

Coteau, Quebec 1

1934	Desk-Lever Interlocking Installed on Canadian National 1.2 MB

Cotley Jct., MA 1

1958	Remote control saves money 868.5 KB

Cotton Belt 3

1946	CTC on 121 Miles of the Cotton Belt 6.4 MB
1954	Why Cotton Belt Installed CTC On 429 Miles of Single Track 4.0 MB
1957	Why Cotton Belt installed CTC on entire main line 914.0 KB

Cotton Hill, WV 1

1921	A New Idea in Traffic Locking On the C&O 1.7 MB

Cottonwood, UT 1

1955	One CTC Machine Replaces Three 451.9 KB

Council Bluffs, IA 9

1965	C&NW’s ATC uses 100 cps AC 901.0 KB
1958	CTC Handles 15 More Trains 2.2 MB
1964	Milwaukee installs its first microwave 277.4 KB
1963	News briefs. 1963-01 951.3 KB
1922	News of the Month. 1922-02 323.2 KB
1925	Preliminary Report on C&NW Train Control 929.6 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1924	Three Train Control Contracts Let 1.9 MB
1926	Train Control Progress in 1925 3.1 MB

Covington, KY 1

1930	C&O Installs New Interlocking and Either-Direction Signaling 5.0 MB

Covington, VA 1

1935	Centralized Traffic Control on the Chesapeake & Ohio 6.2 MB

Cow Creek, KY 1

1962	News briefs. 1962-07 494.2 KB

Coxton, PA 1

1957	Lehigh Valley combines interlockings 404.0 KB

Craig, CO 1

1922	News of the Month. 1922-06 516.2 KB

Cranbrook, British Columbia 1

1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB

Crane, MO 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Cranston, RI 1

1922	Flashlight Crossing Signal 280.8 KB

Crawford, WI 1

1925	CB&Q Controls Switches Remotely 3.7 MB

Crescent Lake, OR 1

1962	Automatic Dispatching 2.1 MB

Crescent, NY 3

1955	CTC reduces operating expenses 431.8 KB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-06 1.2 MB

Crestline, OH 3

1922	New Signaling on the Big Four 717.4 KB
1965	News briefs. 1965-02 1.9 MB
1935	Respacing Automatics on the Pennsylvania 1.8 MB

Crestwood, NY 1

1949	New York Central Installs Interlocking 3.3 MB

Crewe, VA 2

1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-05 1.0 MB

crewless freight trains 1

1962	News briefs. 1962-09 838.3 KB

crewless train 1

1962	Automatic Freight Train is Crewless 1.1 MB

Cromwell, CT 1

1909	Train staff installation on the NYNH&H 1.0 MB

Crookton, AZ 2

1961	News briefs. 1961-06 725.8 KB
1961	Santa Fe Signals New Main Line 913.2 KB

crossbuck 1

1965	Crossing protection gets new look 490.1 KB

crossing 1

1930	New Type Rail Crossing Uses Turntable Principle 964.5 KB

crossing barriers 3

1935	Auto Stop Installed on C&NW 7.2 MB
1937	Barriers on the Michigan Central 7.0 MB
1937	Highway Traffic Retarding Barriers on the Boston & Maine 8.0 MB

crossing bells 1

1935	Crossing Bells at Flasher Signals 1.9 MB

crossing cut-outs 1

1937	Push-Button Cut-Outs 989.3 KB

crossing diamond 1

1922	Improvements in the Eymon Continuous Rail Crossing 950.8 KB

crossing flashers 5

1935	Alining Flashers 3.2 MB
1935	Circuit for Flashing Light Signals 3.5 MB
1935	Circuit for Flashing Light Signals 3.6 MB
1922	News of the Month. 1922-11 361.5 KB
1931	Report of A.R.E.A. on Crossing Signals 246.6 KB

crossing gates 1

1947	Crossing Gate 315.9 KB

crossing indicators 3

1955	Crossing gate protection with indicators for train movements 432.4 KB
1949	Crossing Protection 1.1 MB
1958	What's the answer? Crossing indicators 509.4 KB

crossing markings 1

1962	Identifying Emblems 326.9 KB

crossing recorders 1

1951	South Shore Line Records Gate Operations 375.1 KB

crossing watchmen 13

1951	Automatic-Manual Control for Gates at Five Crossings 418.2 KB
1959	B&M takes up track and installs traffic control, gates and flashers 745.0 KB
1955	Crossing protection for 16 streets 371.1 KB
1947	Crossing Protection in Gary, Indiana 1.6 MB
1958	Crossing protection program saves 59% 553.4 KB
1960	Crossings are safer after 10 years 454.4 KB
1959	Fewer wayside observers makes automatic hazard detection necessary 1.1 MB
1947	Highway Crossing Protection Installed by Several Railroads in Gary, IndianaR 1.2 MB
1960	News briefs. 1960-03 1.9 MB
1959	North Western installs automatic gates at nine crossings 699.9 KB
1960	Signal construction steady in 1959 385.2 KB
1959	Signaling moderate during '58 528.6 KB
1955	Unusual control for crossing protection 722.1 KB

crossings 4

1917	Flash Lights on the P&R 920.4 KB
1917	Flash-Light crossing signal 906.0 KB
1921	Progress of Railroad Signaling in America 731.8 KB
1952	Train Time Saved By New Interlocking and Automatic Protection at 15 Street Crossings in Lima, Ohio 4.4 MB

Croton, NY 3

1961	News briefs. 1961-07 648.9 KB
1962	News briefs. 1962-02 1.4 MB
1936	NYC Modernizes Electric Interlocking 9.0 MB

Croton-on-Hudson, NY 1

1963	News briefs. 1963-01 951.3 KB

Crown Hill, WV 1

1960	News briefs. 1960-06 1.2 MB

Crowsnest, Alberta 1

1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB

Crystal Lake, IL 4

1959	C&NW has system-wide car reporting 702.6 KB
1958	Crossing protection program saves 59% 553.4 KB
1953	Gates at Three Crossings 5.3 MB
1965	Midwest RRs fight the weather 914.4 KB

CTC simulation 1

1964	What CTC Can Do For You 417.8 KB

Cumberland, MD 5

1922	An Old Electric Interlocking in France 1.3 MB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-11 875.5 KB
1961	News briefs. 1961-07 648.9 KB
1957	Traffic signals and crossing gates coordinated in Cumberland, MD 730.3 KB

Cumminsville, OH 1

1934	Electric Interlocking on the B&O 1.1 MB

Curtis, OK 1

1960	News briefs. 1960-03 1.9 MB

cut-over 1

1956	Interlocking Phones 2.3 MB

Cutbank, MT 1

1956	When Dispatchers Move ... Carrier Saves Wire Pair 1.3 MB

Railway Signaling: C