Railway Signaling: B

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.

"BD" interlocking, Binghamton, NY 1

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

"BY" Tower, Baltimore, MD 2

1950	B&O Installs All-Relay Plant 2.6 MB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB

B&P Jct. 1

1934	Centralized Traffic Control Installed on the Alton 1.1 MB

Babylon, NY 1

1952	Speed Control Installed on the Long Island 1.3 MB

Back Bay, Boston, MA 1

1963	News briefs. 1963-03 790.6 KB

back locking 1

1937	Signals in Advance of Switches 1.1 MB

Back Swamp, GA 1

1955	News briefs. 1955-08 830.4 KB

Bagley, F. H 1

1935	Night Check of Signal Lights 1.2 MB

Bailey, Baltimore, MD 2

1950	B&O Installs All-Relay Plant 2.6 MB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB

Bain, WI 1

1926	Electric Plant Replaces Three Mechanical Interlockings 3.0 MB

Bainville, MT 3

1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-07 845.4 KB

Baird, TX 1

1960	T&P moves CTC machine 78 miles 423.0 KB

Bakersfield, CA 7

1962	Automatic Dispatching 2.1 MB
1947	ICC Holds Signal Hearing 507.5 KB
1960	News briefs. 1960-05 1.0 MB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-10 461.7 KB
1962	News briefs. 1962-11 468.1 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Baldwin, FL 1

1964	News briefs. 1964-11 797.3 KB

Baldwin, LA 1

1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB

Balfour, IA 1

1943	Continuously Coded Local Line Wire Signal Control Circuits 4.5 MB

ball signals 1

1955	At Portland Terminal, combined interlocking 810.6 KB

Ballantyne, Quebec 1

1950	Consolidation of Interlockings 2.5 MB

Ballard, KY 2

1961	News briefs. 1961-06 725.8 KB
1961	News briefs. 1961-11 1.3 MB

Ballard, OK 1

1962	News briefs. 1962-02 1.4 MB

ballast resistance 1

1947	DC Track Circuit Measurements 291.6 KB

Balliet, H. S. 3

1943	Herbert S. Balliet obituary 614.8 KB
1911	New 400-Lever Interlocking Machine 3.7 MB
1921	Progress of Railroad Signaling in America 731.8 KB

Baltimore & Ohio 117

1951	"Central" Increases Safety at Highway Crossings in Dayton 1.0 MB
1941	Accident at Interlocking 1.3 MB
1945	Accident at Movable Point Crossing 546.8 KB
1922	An Old Electric Interlocking in France 1.3 MB
1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB
1937	Approach Indications to Train Order Signals 4.2 MB
1927	B&O Celebrates Completion of First 100 Years of Service 3.8 MB
1925	B&O Color-Position-Light Signals 3.7 MB
1956	B&O Crossings 4.3 MB
1950	B&O Installs All-Relay Plant 2.6 MB
1951	B&O Installs Modern Interlocking 871.3 KB
1965	B&O would have used radio orders 573.9 KB
1933	Call-On Signals (editorial) 1.0 MB
1944	Centennial of Morse Telegraph 6.6 MB
1932	Centralized Traffic Control Installed on the Baltimore & Ohio 4.3 MB
1935	Centralized Traffic Control Installed on the Pittsburgh & Lake Erie 12.9 MB
1932	Centralized Traffic Control on the Baltimore & Ohio 4.4 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1951	Circuits for Crossovers on the Baltimore & Ohio 215.2 KB
1955	CTC enables P&LE to remove fourth main track 515.3 KB
1934	CTC Installed on the Baltimore & Ohio 2.1 MB
1954	CTC Moves Heavy Trains 4.1 MB
1952	CTC Pays Its Way on B&O 733.2 KB
1932	CTC Studies 977.5 KB
1929	Detector Locking Should Not Have an Emergency Release 1.3 MB
1926	Directing Trains By Signals 1.9 MB
1925	Dispatching Trains by Signal Indication 968.0 KB
1935	Disposition of Mechanical Interlocking Equipment 1.3 MB
1934	Electric Interlocking on Staten Island Lines of the Baltimore & Ohio 1.2 MB
1934	Electric Interlocking on the B&O 1.1 MB
1938	Electric Switch Heaters at Rock Island Interlocking 1.8 MB
1915	Emergency Suburban Traffic 252.9 KB
1945	Extensive All-Relay Interlocking Features Plug-In Relays 5.6 MB
1936	Flood Damage to Signaling 5.0 MB
1922	Four Position Signaling 859.8 KB
1946	G. H Dryden retires 455.7 KB
1909	Gold Leaf for Signal Blades 351.9 KB
1938	Grade Signal Markers 596.4 KB
1947	Highway Crossing Protection Installed by Several Railroads in Gary, IndianaR 1.2 MB
1927	How Many Signal Aspects and Indications? 2.4 MB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB
1915	Jersey City Terminal Interlocking 1.1 MB
1964	Kinks 300.7 KB
1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1922	Lights vs. Arms for Railway Signaling 4.6 MB
1950	Lunar White 419.3 KB
1951	Modern Interlocking on the Norfolk & Western 710.2 KB
1951	More Signal Construction in 1950 1.0 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. 1960-03 1.9 MB
1960	News briefs. 1960-09 756.9 KB
1960	News briefs. 1960-11 875.5 KB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-07 648.9 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. 1962-06 989.1 KB
1962	News briefs. 1962-11 468.1 KB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-04 889.2 KB
1964	News briefs. 1964-09 879.4 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.2 KB
1935	Nickel Plating of Signal Apparatus 1.1 MB
1950	NYC Installs Big NX Plant at Fostoria, Ohio 3.9 MB
1928	Obituary: Frank P. Patenall 627.0 KB
1937	Ohio Flood Damages Signaling 9.7 MB
1951	On the Baltimore & Ohio New Interlocking Speeds Trains 641.0 KB
1959	P&LE installs multiple track CTC 1.1 MB
1951	P&LE Rebuilds Interlocking 957.2 KB
1920	Pere Marquette Resort Special in Head-On Collision 354.4 KB
1928	Personal Mention: G. H. Dryden 432.7 KB
1931	Point Detector or Switch Circuit Controller for CTC Switches? 835.1 KB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1961	Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB
1936	Railroads Clean Up After Flood Waters 33.3 MB
1918	Record Snowstorms Paralyze Transportation 424.7 KB
1933	Reducing Unnecessary Train Stops 2.5 MB
1947	Remote Control on Baltimore & Ohio 595.8 KB
1944	Remote Control Project Saves Train Time on the Baltimore & Ohio 3.5 MB
1935	Removal of Switch Indicators 2.3 MB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1929	Report on B&O Head-End Collision at East St. Louis 1.1 MB
1917	Rock Island Signaling on the Chicago Terminal 1.2 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1935	Safety of High Speed Trains 5.2 MB
1926	Semaphore or Light Signals? 1.8 MB
1930	Signal Aspects for a Four Block System 2.8 MB
1951	Signal Modernization Program on the RF&P 1.0 MB
1959	Signaling: 1960 225.2 KB
1951	Simple Interlocking Saves Many Train Stops 370.2 KB
1951	Single-Track With CTC Handles 40 Trains Daily 530.8 KB
1936	Slide Detector Fences 4.3 MB
1944	St. Louis-San Francisco Installs Centralized Traffic Control 1.1 MB
1951	Street and Railroad Crossing Protection Combined 529.9 KB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1927	The Color Position Light Signal (poem) 435.2 KB
1908	The Electro-Pneumatic Signal and Interlocking System at the New Union Station, Washington, DC 4.5 MB
1910	The Multiple Unit Electric Interlocking Machine 1.5 MB
1937	The Rotating Stop Sign 1.1 MB
1951	Traffic Direction Indication 152.0 KB
1957	Traffic signals and crossing gates coordinated in Cumberland, MD 730.3 KB
1936	Train Control on the B&O Diesel 2.6 MB
1926	Train Control Progress in 1925 3.1 MB
1954	Train Operations When CTC Fails 2.0 MB
1952	Train Time Saved By New Interlocking and Automatic Protection at 15 Street Crossings in Lima, Ohio 4.4 MB
1923	Train-Order Signals at Interlockers 3.6 MB
1929	Trains on Baltimore & Ohio Operate by Signal Indication Over Single-Track Lines 2.7 MB
1909	Union Switch & Signal’s Inspection Trip 1.5 MB
1949	Varied Light Intensity 921.0 KB
1936	What Is the Capacity of a Single-Track Line? 2.0 MB
1965	What's the Answer? 1965-07 629.7 KB
1955	Yard operations improved by new interlocking and car retarders 621.2 KB

Baltimore & Ohio Chicago Terminal 8

1931	Automatic Interlocker Protects Gauntlet Track 1.4 MB
1938	B&OCT Installs Route Interlocking 8.9 MB
1932	B&OCT Stops Theft of Coal with Four Automatic Plants at Chicago Heights, IL 1.9 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1931	One Electric Interlocking for Two Drawbridges 3.1 MB
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB

Baltimore, MD 12

1950	B&O Installs All-Relay Plant 2.6 MB
1944	Centennial of Morse Telegraph 6.6 MB
1934	Centralized Traffic Control Installed on the Alton 1.1 MB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB
1955	News briefs. 1955-08 830.4 KB
1959	News briefs. 1959-05 506.5 KB
1938	Pennsylvania Electrification Signaling 5.3 MB
1928	Pennsylvania Installs Code System of Train Stop with Signaling 5.7 MB
1961	Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB
1946	Reverse Running on the Pennsylvania 2.8 MB
1944	St. Louis-San Francisco Installs Centralized Traffic Control 1.1 MB
1926	Train Control Progress in 1925 3.1 MB

Bandini, CA 1

1944	Santa Fe Installs CTC on 115.6 Miles Los Angeles to San Diego 7.2 MB

Bangor & Aroostook 1

1957	BAR takes up second track and installs CTC 706.6 KB

Bangor, ME 1

1935	Safety of High Speed Trains 5.2 MB

Baraboo, WI 1

1913	New Block Signaling on the North-Western 1.8 MB

Barboursville, WV 2

1921	A New Idea in Traffic Locking On the C&O 1.7 MB
1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB

Barcelona, Spain 1

1964	Eight cities test automatic train operation 1.1 MB

Barnett, GA 1

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

Barr, IL 1

1963	News briefs. 1963-12 429.2 KB

Barrington, IL 3

1932	Collision in Signal Territory 513.9 KB
1938	EJ&E Installs APB Signaling 3.1 MB
1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Barrytown, NY 2

1961	News briefs. 1961-07 648.9 KB
1962	News briefs. 1962-02 1.4 MB

Barstow, CA 3

1947	ICC Holds Signal Hearing 507.5 KB
1960	News briefs. 1960-05 1.0 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Barth, NV 1

1964	News briefs. 1964-10 768.6 KB

Basel, Switzerland 1

1922	Controlled Manual Block in Hauenstein Tunnel 3.4 MB

Batavia, NY 1

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

Batesville, AR 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Baton Rouge, LA 2

1947	Illinois Central Honors Radio “Hams” for Emergency Services 278.0 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

battery boxes 1

1965	Midwest RRs fight the weather 914.4 KB

battery charger 1

1935	New Devices 1.5 MB

battery charging rate control relay 1

1937	New Devices- March 1937 18.1 MB

battery-powered switch lamps 1

1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB

Battle Creek, MI 2

1964	News briefs. 1964-04 1.3 MB
1949	Protection at All Crossings In Battle Creek on the Grand Trunk Western 6.6 MB

Battle Mountain, NV 1

1964	News briefs. 1964-10 768.6 KB

Baughman, G. W. 1

1947	Application of Code Principles to Signaling 406.6 KB

Baughman, George W. 1

1956	How to Control Signals Safely Where Lightweight Trains are Operated 8.4 MB

Bay Area Rapid Transit 1

1964	News briefs. 1964-04 1.3 MB

Bay City Jct., MI 1

1953	Remote Control Interlockings Improve Terminal Operation 551.4 KB

Bay City, MI 1

1947	Choice of Interlocking Control Machines 266.5 KB

Bay Minette, AL 1

1964	News briefs. 1964-08 811.5 KB

Bay St. Louis, MS 1

1964	News briefs. 1964-08 811.5 KB

Bay View, Baltimore, MD 1

1955	News briefs. 1955-08 830.4 KB

Bay View, MD 1

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

Bay View, NY 4

1960	Electric eye catches high loads on NYC 352.5 KB
1955	New York Central’s CTC – It’s Four Tracks to Two 4.1 MB
1955	News briefs. 1955-08 830.4 KB
1957	Where Two Tracks Do the Work of Four 3.2 MB

Bayard, FL 2

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

Bayard, OH 1

1962	News briefs. 1962-02 1.4 MB

Bayonne, NJ 1

1927	CNJ Completes Interlocking to Safeguard Newark Bay Bridge 4.4 MB

Bayview, Ontario 1

1958	CN consolidates interlockings 2.1 MB

BCD Jct., AR 1

1958	MP consolidates CTC machines 797.2 KB

Beach Jct., Manitoba 1

1958	Nine layouts in one interlocking 1.7 MB

Beaumont, CA 1

1957	How long sidings save train time 465.2 KB

Beaumont, TX 2

1943	Signals Ordered on the Kansas City Southern 1.4 MB
1935	Traffic Type Signals for Protection of Highway-Railroad Crossings 2.5 MB

Beech Grove, IN 1

1960	News briefs. 1960-07 845.4 KB

Belen, NM 2

1945	CTC West of the Pecos On the Santa Fe 4.6 MB
1960	News briefs. 1960-03 1.9 MB

Belen, TX 1

1962	Centralization – Dispatch Circuits Are Changing 1.3 MB

Belgium 1

1957	Track circuit developments in Europe 234.8 KB

Bell Laboratories 1

1949	The Transistor 3.1 MB

Bellefontaine, OH 3

1920	Electric Interlocking at Bellefontaine, Ohio 3.8 MB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-10 1.1 MB

Belleville, KS 1

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

Bellevue, OH 1

1947	New Interlocking at Bellevue, Ohio Protects Crossings of Four Railroads 997.9 KB

Belmont, CA 1

1931	Speed Control of Crossing Signals 586.7 KB

Beloit Jct., IL 1

1934	CTC Replaces Staff on Milwaukee 2.0 MB

Beloit, IL 1

1934	CTC Replaces Staff on Milwaukee 2.0 MB

Belpre, OH 1

1961	News briefs. 1961-07 648.9 KB

Belt Jct., Chicago, IL 1

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB

Belt Jct., Indianapolis, IN 1

1941	Monon Changes Approved 760.8 KB

Belt Jct., TX 1

1960	News briefs. 1960-03 1.9 MB

Belt Line Jct., Detroit, MI 2

1936	Crossing Protection Includes Signals for Directing Trains 17.0 MB
1929	Simplified Electric Interlocking Plant on Michigan Central.pdf 3.6 MB

Belt Line Jct., Reading, PA 1

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

Belt Railway of Chicago 10

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1943	Fire-Proof Construction 11.6 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
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1963	News briefs. 1963-04 889.2 KB
1964	News briefs. 1964-05 1.0 MB
1957	Relay Interlocking Saves Time at Yard Entrances 2.5 MB
1917	Rock Island Signaling on the Chicago Terminal 1.2 MB
1915	The Push Button Interlocking Plant at Clearing Yard 351.3 KB

Belt Yard, IN 1

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

Bement, IL 2

1942	Wabash Installs Automatics 5.8 MB
1930	Wabash Tests Automatic Train Control with Cab-Lights 3.6 MB

Ben Davis, IN 2

1930	Pennsylvania Installs Centralized Control on 30.3 Miles of Single Track 1.7 MB
1940	Pennsylvania Installs Centralized Traffic Control On 69 Miles of Line 13.1 MB

Benkelman, NE 1

1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB

Bensenville, IL 2

1933	Consolidated Interlockings 1.8 MB
1964	Milwaukee installs its first microwave 277.4 KB

Benton, AR 1

1958	MP consolidates CTC machines 797.2 KB

Benz, TX 1

1949	New Automatic Block on the Katy 4.7 MB

Beppo, UT 1

1913	New Signaling Across the Great Salt Lake 2.2 MB

Berea, OH 2

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

Berlin S-Bahn 1

1923	Signals on the Berlin Subway and Elevated 4.7 MB

Berlin, IN 1

1930	Pennsylvania Uses Remote Control for Switches 1.1 MB

Berrysburg, W 1

1965	B&O would have used radio orders 573.9 KB

Berwick, OH 4

1928	Dispatcher Signaling System Operates Through Sleet Storm 1.1 MB
1927	NYC First to Install Complete Train Dispatching System 8.0 MB
1931	Results of Centralized Control on NYC 703.8 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB

Berwin, GA 1

1964	News briefs. 1964-09 879.4 KB

Berwyn, IL 1

1918	New Electric Interlocking at Clyde, IL 418.7 KB

Bessemer & Lake Erie 5

1943	A Review of 1942 2.9 MB
1957	Bessemer takes up second track and installs Centralized Traffic Control 700.5 KB
1943	CTC on the Bessemer & Lake Erie 8.7 MB
1937	Gauntlet Signals on the B&LE 7.1 MB
1957	More automation for signaling in 1957 1.2 MB

Bethard, TX 1

1949	New Automatic Block on the Katy 4.7 MB

Bethayers, PA 1

1937	Remote Control By Code 7.0 MB

Beulah, MN 1

1940	New Automatic Block Signaling on the Milwaukee 6.3 MB

Biaggini, B. F. 1

1964	What CTC Can Do For You 417.8 KB

biased neutral relays 1

1947	Biased Neutral Relays 461.4 KB

Biddle Street, St. Louis, MO 1

1908	Interlocking Facilities of the St. Louis Terminal Railroad Assn. of St. Louis 7.2 MB

Big Elk, DE 1

1936	Remote Control on the Pennsylvania 14.5 MB

Big Flats, NY 1

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

Big Four 3

1947	Choice of Interlocking Control Machines 266.5 KB
1920	Electric Interlocking at Bellefontaine, Ohio 3.8 MB
1957	More automation for signaling in 1957 1.2 MB

Big Four Yard, Indianapolis, IN 1

1960	News briefs. 1960-11 875.5 KB

Big Sandy Jct., KY 2

1949	CTC Increases Capacity of Single-Track Freight Line Handling Heavy Traffic 6.1 MB
1957	One Machine Controls Two Plants 2.2 MB

Biggar, Saskatchewan 3

1961	News briefs. 1961-11 1.3 MB
1962	News briefs. 1962-07 494.2 KB
1964	News briefs. 1964-01 535.9 KB

bill of material 1

1911	Standard Outline Bill of Mechanical Material 8.7 MB

Billburn, NJ 1

1926	Directing Trains By Signals 1.9 MB

Billings, MT 6

1911	Automatic Signals on the Northern Pacific 6.3 MB
1960	News briefs. 1960-07 845.4 KB
1961	News briefs. 1961-12 978.0 KB
1963	News briefs. 1963-06 961.3 KB
1964	News briefs. 1964-02 981.5 KB
1964	News briefs. 1964-08 811.5 KB

Bimo, MI 1

1927	Half Interlocker on DT&I 565.6 KB

Bingham Canyon, UT 2

1947	Modern Interlocking Applied to Ore Transportation 1.1 MB
1965	News briefs. 1965-12 609.3 KB

Binghamton, NY 6

1958	DL&W-Erie joint operation is ready to go 643.6 KB
1964	News briefs. 1964-09 879.4 KB
1965	News briefs. 1965-02 1.9 MB
1966	News briefs. 1966-01 1.4 MB
1960	Signal construction steady in 1959 385.2 KB
1933	Train Accident on the Erie Railroad 964.9 KB

Birmingham, AL 5

1947	Choice of Interlocking Control Machines 266.5 KB
1947	Frisco Moves CTC to One Office 481.1 KB
1961	News briefs. 1961-01 761.9 KB
1962	News briefs. 1962-04 1.2 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Birmingham, MO 1

1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB

Bishoff, KY 1

1947	CTC Down by the Ohio 2.7 MB

Bishop, IL 1

1964	News briefs. 1964-07 833.0 KB

Bison Yard, East Buffalo, NY 1

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

Biwabik, MN 1

1962	DM&IR Consolidates CTC Control Miles 384.7 KB

Bixby, IL 1

1964	News briefs. 1964-08 811.5 KB

Black Butte, CA 2

1963	News briefs. 1963-02 1.3 MB
1965	News briefs. 1965-05 1.4 MB

Black Creek, AL 2

1961	News briefs. 1961-01 761.9 KB
1963	News briefs. 1963-03 790.6 KB

Blackey, KY 1

1950	L&N Extends CTC on "EK" 10.4 MB

Blackmore, VA 1

1960	Long-distance hot box detection 861.0 KB

blackouts 1

1942	Signal Aspects During Blackouts 2.2 MB

Blake, WV 1

1961	News briefs. 1961-04 1.5 MB

Blakesley, OH 1

1950	CTC on the Wabash 2.6 MB

Blandon, Reading, PA 1

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

block 1

1940	A Change in the Requisites, Definitions and Regulations 1.2 MB

block length 1

1940	Determination of Block Lengths on the San Francisco-Oakland Bay Bridge 4.0 MB

block signal applications 1

1958	Signal Inspection Act 214.8 KB

block signaling 6

1919	Block Signaling Practice on a British Railway (Part 1) 299.0 KB
1919	Block Signaling Practice on a British Railway (Part 2) 484.7 KB
1919	Block Signaling Practice on a British Railway (Part 3) 337.3 KB
1915	British and American Railroad Signaling 3.6 MB
1947	ICC Signal Hearings 179.7 KB
1911	Signaling Practice on Steam Railways 5.5 MB

Blodgett, IL 1

1913	New Block Signaling on the North-Western 1.8 MB

Bloomington, IL 6

1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-09 829.8 KB
1963	News briefs. 1963-11 1.4 MB
1964	News briefs. 1964-02 981.5 KB
1965	News briefs. 1965-10 1.1 MB
1926	Train Control Progress in 1925 3.1 MB

Bloomington, IN 3

1917	Block Signals on the Monon 675.3 KB
1937	Crossing Protection on the Monon 5.0 MB
1941	Monon Changes Approved 760.8 KB

Blue Island, IL 12

1932	A Call-On Signal Is Different from a Stop and Proceed Signal 667.6 KB
1958	Central opens Young Yard 2.5 MB
1944	Coded Track Circuits for CTC and Cab Signaling 4.0 MB
1927	Indiana Harbor Belt Rebuilds Flat Yard Into Hump Layout Providing Retarders and Power Switches 2.9 MB
1916	New Automatic Signals on Grand Trunk 997.0 KB
1961	News briefs. 1961-01 761.9 KB
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
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB
1930	The Rock Island Develops Unique Interlocker with No Mechanical Locking 2.4 MB

Blue River, British Columbia 1

1955	News briefs. 1955-08 830.4 KB

Bluefield, WV 2

1951	Both Tracks Both Ways on Norfolk & Western 623.5 KB
1961	News briefs. 1961-04 1.5 MB

Bluestone, WV 1

1951	Both Tracks Both Ways on Norfolk & Western 623.5 KB

Bluford, IL 2

1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-09 756.9 KB

Board of Railroad Commissioners of Canada 1

1910	Interlocking Laws in the United States and Canada 821.1 KB

boat detector 1

1962	Trains Control Automatic Bridge 1.2 MB

Bogota, NJ 1

1965	News briefs. 1965-02 1.9 MB

Bombay, Baroda & Central India 1

1951	Extension of Color-Light Signaling on the Bombay, Baroda & Central India Railway 524.0 KB

Bombay, India 1

1951	Extension of Color-Light Signaling on the Bombay, Baroda & Central India Railway 524.0 KB

Bond, CO 1

1944	Rio Grande has Longest CTC 9.2 MB

bonding 4

1950	Bootleg Risers and Bonds 2.1 MB
1940	Cadweld (Thermex) Signal Bonds 996.4 KB
1935	Installation of Bond Wires 1.2 MB
1935	Installation of Bond Wires 4.0 MB

Bonsack, VA 1

1949	Either-Direction Running on Two Tracks on the Norfolk & Western 5.5 MB

Boolean logic 3

1962	Electronic Interlocking 2.2 MB
1964	How computers may be applied 1.2 MB
1963	Solid State Devices 938.4 KB

Boone, IA 3

1920	A Special Circuit Saves Money 394.1 KB
1924	Three Train Control Contracts Let 1.9 MB
1926	Train Control Progress in 1925 3.1 MB

Booneville, AR 1

1947	ICC Signal Hearings 179.7 KB

Boonton, NJ 1

1958	News briefs. 1958-01 1.8 MB

Bordeaux, France 1

1922	An Old Electric Interlocking in France 1.3 MB

Borden, IN 1

1941	Monon Changes Approved 760.8 KB

Borie, WY 1

1955	CTC and cab signaling on Union Pacific 789.5 KB

Boron, CA 1

1960	News briefs. 1960-03 1.9 MB

Boston & Albany 7

1920	East Somerville Electro-Pneumatic Plant 754.4 KB
1936	Flood Damage to Signaling 5.0 MB
1957	More automation for signaling in 1957 1.2 MB
1954	NYC Combines Interlockings 2.4 MB
1936	Railroads Clean Up After Flood Waters 33.3 MB
1935	Traffic Type Signals for Protection of Highway-Railroad Crossings 2.5 MB
1926	Train Control Progress in 1925 3.1 MB

Boston & Lowell 1

1916	William Robinson, Inventor of the Track Circuit 373.1 KB

Boston & Maine 66

1912	Acetylene Signal Lights on the Boston & Maine 1.3 MB
1947	Annual Review and Outlook 425.1 KB
1937	Approach Indications to Train Order Signals 4.2 MB
1955	At Portland Terminal, combined interlocking 810.6 KB
1958	B&M goes underground 725.7 KB
1929	B&M Installs Either-Direction Signaling in Hoosac Tunnel 7.1 MB
1959	B&M takes up track and installs traffic control, gates and flashers 745.0 KB
1936	Boston & Maine Flooded Signaling Rehabilitated 8.3 MB
1935	Braking Distance with Signals 2.4 MB
1933	Checking the "D" Relay 440.2 KB
1947	Choice of Interlocking Control Machines 266.5 KB
1947	CTC Extension on the Boston & Maine 792.3 KB
1951	CTC on Single Track Permits Removal of Second Main on 22.4 Miles on Boston & Maine 924.4 KB
1955	CTC reduces operating expenses 431.8 KB
1936	Demands for Modern Signaling 12.1 MB
1951	Double Track to Single With CTC 197.9 KB
1930	Dwarf Signal Aspects 582.4 KB
1961	Dynamic Indication 254.1 KB
1920	East Somerville Electro-Pneumatic Plant 754.4 KB
1931	Economy of Smaller Towers 539.7 KB
1931	Efficiency Tests 1.9 MB
1957	Elevation causes signal changes 893.2 KB
1928	Extensive Interlocking Changes Made by Boston & Maine 3.9 MB
1950	Flashing Signal Aspects 1.1 MB
1950	Gate-Arm Stripe Colors 3.4 MB
1937	Highway Traffic Retarding Barriers on the Boston & Maine 8.0 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1936	Importance of Warning Whistle 6.8 MB
1958	Improved signaling results from grade elimination 883.1 KB
1935	Inspecting Switch Circuit Controllers 1.7 MB
1937	J. C. Mock Retires 1.4 MB
1935	Modern Signal Aspects on the Boston & Maine 5.1 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	Multiple Aspect Signaling 3.3 MB
1933	New Interlockers – Reversion to Single Track 418.4 KB
1935	New Signaling on the Boston & Maine 9.9 MB
1962	News briefs. 1962-02 1.4 MB
1963	News briefs. 1963-04 889.2 KB
1963	News briefs. 1963-10 497.4 KB
1964	News briefs. 1964-02 981.5 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.2 KB
1965	News briefs. 1965-10 1.1 MB
1965	News briefs. 1965-11 1.2 MB
1966	News briefs. 1966-01 1.4 MB
1935	Obsolescence in Signaling 3.4 MB
1951	Portland Terminal Solves Crossing Protection Problem 676.8 KB
1928	Preparation of Circuit Plans 576.3 KB
1935	Preventing Unnecessary Operation of Highway-Railroad Crossing Signals 4.3 MB
1921	Progress of Railroad Signaling in America 731.8 KB
1937	Report of Committee X – Signaling Practice 2.9 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1935	Safety of High Speed Trains 5.2 MB
1959	Signaling moderate during '58 528.6 KB
1958	Signaling to cut expenses in '58 411.4 KB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1935	The Railways' Answer to the Demand for Speed 2.8 MB
1925	The Train Control Situation 853.0 KB
1932	Track Model Lights 444.9 KB
1937	Track Shunting Problems 947.3 KB
1923	Train-Order Signals at Interlockers 3.6 MB
1950	Two Single Tracks, Side By Side 1.4 MB
1960	What's the answer? Snow shields 424.6 KB

Boston & Providence 1

1916	William Robinson, Inventor of the Track Circuit 373.1 KB

Boston Elevated 2

1921	New Interlocking on the Boston Elevated 3.3 MB
1937	Semi-Automatic Interlockings on the Boston Elevated 3.8 MB

Boston, Lowell & Nashua 1

1916	William Robinson, Inventor of the Track Circuit 373.1 KB

Boston, MA 9

1929	B&M Installs Either-Direction Signaling in Hoosac Tunnel 7.1 MB
1928	Extensive Interlocking Changes Made by Boston & Maine 3.9 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1921	New Interlocking on the Boston Elevated 3.3 MB
1960	News briefs. 1960-09 756.9 KB
1962	News briefs. 1962-11 468.1 KB
1935	Safety of High Speed Trains 5.2 MB
1937	Semi-Automatic Interlockings on the Boston Elevated 3.8 MB
1935	Traffic Type Signals for Protection of Highway-Railroad Crossings 2.5 MB

Boston, Ontario 2

1964	News briefs. 1964-02 981.5 KB
1964	News briefs. 1964-04 1.3 MB

Boulogne Sur Mer, Argentina 1

1960	News briefs. 1960-06 1.2 MB

Boyce, VA 1

1950	Neon Lighting For Crossing Gate Arms 3.1 MB

Boyles, GA 1

1960	News briefs. 1960-11 875.5 KB

Braddock, KS 1

1922	Signal Construction on the Santa Fe 797.6 KB

Bradford, OH 1

1940	11,000-Ft. Coded Track Circuits 13.6 MB

Brady, PA 1

1944	Pennsylvania Installs CTC On 53 Miles of Busy Single Track 8.5 MB

Bragdon, CO 1

1950	Automatic Block Increases Safety on Paired Trackage 4.6 MB

braking distance 16

1935	A Problem in Spacing Signals for Higher Train Speeds 1.6 MB
1935	Braking Distance with Signals 2.4 MB
1946	Burlington Tests Show Signals Adequate 1.3 MB
1940	Determination of Block Lengths on the San Francisco-Oakland Bay Bridge 4.0 MB
1939	Intermediate Signals and Approach Aspects 2.3 MB
1916	Methods of Locating Automatic Signals 428.3 KB
1935	Multiple Aspect Signaling 3.3 MB
1935	Multiple-Block Signaling 7.0 MB
1935	New Signaling on the Route of the C&NW "400" 9.6 MB
1937	Report of Committee X – Signaling Practice 2.9 MB
1941	Rule 204 1.7 MB
1935	Safety of High Speed Trains 5.2 MB
1963	Signal changes make transit run on railroad 1.1 MB
1935	Signaling for Higher Train Speeds 3.0 MB
1935	Stopping Distance and Signal Spacing 1.8 MB
1950	Stopping Distance on Grades 3.5 MB

Branch Jct., IL 6

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
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

Brandenburg, KY 1

1947	CTC Down by the Ohio 2.7 MB

Brandon, Manitoba 2

1963	News briefs. 1963-06 961.3 KB
1965	News briefs. 1965-01 2.0 MB

Brant, IN 1

1960	News briefs. 1960-07 845.4 KB

Brayton, RI 1

1947	The New Haven Installs All-Relay Interlocking at Providence, RI 1.9 MB

BRC Western Ave. interlocking, Chicago, IL 1

1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB

breakdown testing 1

1965	What's the Answer? 1965-07 629.7 KB

Breckenridge, MN 3

1957	GN CTC's 175 miles of mainline 635.9 KB
1947	ICC Holds Signal Hearing 507.5 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Brewster, OH 1

1950	CTC Installed on 128 Miles of NKP 12.1 MB

Brice, GA 1

1964	News briefs. 1964-09 879.4 KB

Bridge 8, WI 1

1937	Route Control Interlocking – A New Signaling Development 2.9 MB

bridge alignment detectors 1

1939	Special Aspects for Detectors 937.0 KB

Bridge Switch, MN 1

1926	Train Control Progress in 1925 3.1 MB

Bridge, UT 1

1947	Southern Pacific Installs CTC 990.2 KB

Bridgeport, CT 2

1939	Electric Interlocking on the New Haven 2.1 MB
1913	New Haven Concrete Interlocking Towers 2.3 MB

Bridgeport, IL 1

1913	Illinois Central Alternating Current Signaling 2.5 MB

Bridgeport, MI 1

1928	Pere Marquette Installs Centralized Control Signal System 3.2 MB

Bridgeport, PA 1

1965	News briefs. 1965-01 2.0 MB

bridges 1

1949	Insulation of Rails 874.8 KB

Briggs, OR 1

1963	News briefs. 1963-01 951.3 KB

Brinkley, AR 2

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

Bristol, IL 1

1929	Spring Switches on Illinois Central 415.8 KB

Bristol, VA 1

1947	107 Miles of CTC on the N&W 2.3 MB

Bristow, OK 1

1929	Frisco Installs Semaphores with Color-Light Indication 665.1 KB

Bristow, VA 1

1960	News briefs. 1960-01 1.1 MB

British Railways 7

1959	Computer simulates train operation 524.0 KB
1962	Electronic Interlocking 2.2 MB
1960	News briefs. 1960-03 1.9 MB
1961	News briefs. 1961-09 886.8 KB
1963	News briefs. 1963-01 951.3 KB
1964	News briefs. 1964-08 811.5 KB
1964	Train Describers: A step toward ATI 2.1 MB

Broad St., Philadelphia, PA 2

1931	Pennsylvania Cuts Over Large Interlocking Plant Without Delaying Traffic 2.6 MB
1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

Broad Street Station, Philadelphia, PA 1

1923	Quick Restoration of Wire Service at Broad Street Station 3.5 MB

broadcast radio 1

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

Broadview, IL 1

1942	Automatic Signal Program on the Illinois Central 4.6 MB

Broadview, Manitoba 1

1963	News briefs. 1963-06 961.3 KB

Broadview, Saskatchewan 1

1962	News briefs. 1962-05 826.8 KB

Broadway Tower, Kansas City, MO 1

1949	Entrance-Exit Interlocking Installed on Missouri Pacific 3.0 MB

Brocton, NY 1

1962	News briefs. 1962-03 1.1 MB

broken rails 1

1937	Broken Rails 1.1 MB

broken wheel detectors 2

1959	Fewer wayside observers makes automatic hazard detection necessary 1.1 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB

Bronx, NY 1

1950	Route Type Interlocking on New York Subway 8.7 MB

Brookfield, MO 1

1959	Burlington installs modified CTC 1.0 MB

Brookhaven, MS 1

1962	News briefs. 1962-04 1.2 MB

Brooklyn Bridge, New York, NY 1

1916	AC Signaling in the Centre Street Loop 924.9 KB

Brooklyn Rapid Transit 4

1916	AC Signaling in the Centre Street Loop 924.9 KB
1923	BRT Automatic Interlocking 1.9 MB
1922	Locating Automatic Block Signals for Heavy Traffic (Part 1) 3.6 MB
1922	Locating Automatic Block Signals for Heavy Traffic (Part 1) 4.4 MB

Brooklyn, NY 6

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB
1935	Automatic Interlocking on the Brooklyn-Manhattan Transit 5.4 MB
1923	BRT Automatic Interlocking 1.9 MB
1949	Signaling and Interlocking On New Line of New York Subways 6.5 MB
1952	Speed Control Installed on the Long Island 1.3 MB
1960	Subway train is automatic 552.2 KB

Brooklyn, OR 1

1964	News briefs. 1964-02 981.5 KB

Brooklyn-Manhattan Transit 2

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB
1935	Automatic Interlocking on the Brooklyn-Manhattan Transit 5.4 MB

Brookston, MN 1

1960	News briefs. 1960-01 1.1 MB

Brookville, OH 1

1955	Pennsylvania installs wayside equipment for cab signaling 745.7 KB

Brotherhood of Railroad Signalmen 1

1965	Signalmen's President Jesse Clark discusses safety on the railroads 643.5 KB

Browns, IA 1

1951	Single Track with CTC Replaces Double Track on Milwaukee 586.0 KB

Brownville, PA 1

1959	P&LE installs multiple track CTC 1.1 MB

Bruceton, TN 2

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1955	What CTC did for the Dixie Line 889.8 KB

Brunswick, MD 1

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

Brush, CO 1

1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB

Brush, Decatur, IL 1

1954	Wabash Yard Moves Expedited 1.2 MB

Bryn Mawr, PA 2

1915	First Position Light Signal Installation 580.6 KB
1916	Service Record of Position-Light Signals 580.8 KB

Buchanan Branch 1

1940	Centralized Traffic Control Solves Problem on the Norfolk & Western 7.5 MB

Bucyrus, OH 1

1965	News briefs. 1965-02 1.9 MB

Buda 1

1947	Crossing Gate 315.9 KB

Buda, IL 1

1946	More Difficult to Get a Call-On Signal 488.8 KB

Budd, IA 1

1911	Automatic Signals on the Chicago Great Western 7.4 MB

Buenos Aires Great Southern 1

1932	Electro-Pneumatic Interlocking With Optical Route Indicators in the New Buenos Aires Terminal 715.1 KB

Buenos Aires, Argentina 2

1932	Electro-Pneumatic Interlocking With Optical Route Indicators in the New Buenos Aires Terminal 715.1 KB
1960	News briefs. 1960-06 1.2 MB

Buffalo, NH 1

1951	Double to Single Track 60 Miles on the Erie 1.1 MB

Buffalo, NY 18

1927	Color Light Automatic Block Signals Installed on the New York Central 3.6 MB
1959	CTC discussed at AIEE meeting 445.2 KB
1951	Double to Single Track 60 Miles on the Erie 1.1 MB
1951	Double Track to Single With CTC 197.9 KB
1960	Electric eye catches high loads on NYC 352.5 KB
1960	Erie installs its first hotbox detector 462.1 KB
1957	More automation for signaling in 1957 1.2 MB
1951	More Signal Construction in 1950 1.0 MB
1960	News briefs. 1960-09 756.9 KB
1961	News briefs. 1961-10 1.0 MB
1963	News briefs. 1963-03 790.6 KB
1964	NYC Moves CTC Point of Control 1.2 MB
1947	Relay Interlocking on Lehigh Valley 805.7 KB
1960	Signal construction steady in 1959 385.2 KB
1960	Signaling enters automation 630.6 KB
1959	Signaling moderate during '58 528.6 KB
1958	Signaling to cut expenses in '58 411.4 KB
1949	Train Operation By Signal Inidication Used Extensively on the Nickel Plate 6.1 MB

Buffalo, Rochester & Pittsburgh 5

1911	A Summary of Signaling Practice 3.6 MB
1931	Efficiency Tests 1.9 MB
1913	New Block Signaling on the North-Western 1.8 MB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1923	Train-Order Signals at Interlockers 3.6 MB

Buford, WY 1

1955	CTC and cab signaling on Union Pacific 789.5 KB

Bulawayo, Rhodesia 1

1965	Rhodesia has 1215 miles of CTC 949.2 KB

Bulawayo, Zimbabwe 1

1965	Rhodesia has 1215 miles of CTC 949.2 KB

Bunnell, FL 2

1963	News briefs. 1963-11 1.4 MB
1964	News briefs. 1964-12 981.5 KB

Bureau of Public Roads 2

1935	Highway Crossing Protection With Federal Funds 2.9 MB
1935	The Federal Crossing Protection Program 1.6 MB

Bureau, IL 6

1944	Coded Track Circuits for CTC and Cab Signaling 4.0 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
1946	Rock Island Uses Carrier Equipment for Automatic OS Reports 3.9 MB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB

Burkeville, VA 2

1960	News briefs. 1960-03 1.9 MB
1963	News briefs. 1963-03 790.6 KB

Burley, Paul B. 1

1950	Personnel changes on the IC 1.4 MB

Burlington, IA 2

1959	Burlington installs modified CTC 1.0 MB
1925	CB&Q Controls Switches Remotely 3.7 MB

Burlington-Rock Island 1

1954	This Automatic Block Is Different 3.3 MB

Burnham, IL 1

1934	South Shore Reconstructs Interlocking 1.2 MB

Burnside, IL 1

1910	Reconstruction of Burnside Interlocking 863.7 KB

Burnt Hills, NY 1

1955	CTC reduces operating expenses 431.8 KB

Burr, IN 1

1961	News briefs. 1961-07 648.9 KB

Burroughs, GA 1

1955	News briefs. 1955-08 830.4 KB

Burwell, Decatur, IL 1

1954	Wabash Yard Moves Expedited 1.2 MB

Bushnell, IL 1

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

Butler, IN 1

1950	CTC on the Wabash 2.6 MB

Butler, PA 1

1964	News briefs. 1964-09 879.4 KB

Butler, WI 2

1959	C&NW has system-wide car reporting 702.6 KB
1913	New Block Signaling on the North-Western 1.8 MB

Butte, MT 1

1916	Signaling the Milwaukee's Electric Zone 624.8 KB

BX interlocking, Indianapolis, IN 1

1960	News briefs. 1960-07 845.4 KB

Byers Jct., OH 1

1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB

Railway Signaling: B

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