Railway Signaling: 1941

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15th Street, Chicago, IL 1
Two New Interlockings on the C&WI   5.1 MB
16th Street (C&WI), Chicago, IL 1
Two New Interlockings on the C&WI   5.1 MB
1941 1
1941 index   3.7 MB
55th Street, Chicago, IL 1
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
absolute permissive block signaling 2
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
Simplified Signaling   426.9 KB
accident 1
Accident at Interlocking   1.3 MB
all-relay interlocking 2
All-Relay Signal System Installed on Terminal Railroad of St. Louis   1.2 MB
Southern Pacific Installs Interlocking at Drawbridge   6.3 MB
Alton 2
Electric Locking With No Derails   735.7 KB
Interlocking and Automatic Signals on the Alton   3.0 MB
Alton, IL 1
Interlocking and Automatic Signals on the Alton   3.0 MB
Atchison, Topeka & Santa Fe 3
Carrier Communication Equipment Installed on the Santa Fe   4.7 MB
Non-Stop Permissive Signals   1.4 MB
Railway Exhibit Presented to Museum of Science and Industry   636.5 KB
automatic block signaling 10
A Review of 1940 and Prospects for the Future   1.3 MB
A Simplified Signaling Arrangement For the Direction of Trains by Signal Indications   5.5 MB
Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio   4.3 MB
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
Automatics Installed on North Shore   1.6 MB
Flashing Yellow as a Fourth Aspect on the IC   2.6 MB
Monon Changes Approved   760.8 KB
Non-Stop Permissive Signals   2.8 MB
Non-Stop Permissive Signals   1.4 MB
Rule 204   1.7 MB
automatic block signals 1
Field Circuits For Simplified Semi-Automatic Signaling   3.6 MB
automatic interlocking 2
DT&I Installs Automatic Interlocking   5.0 MB
Loss of Shunt   912.3 KB
Baldwin, LA 1
Southern Pacific Installs Interlocking at Drawbridge   6.3 MB
Baltimore & Ohio 1
Accident at Interlocking   1.3 MB
Barboursville, WV 1
Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio   4.3 MB
Belt Jct., Chicago, IL 1
Belt Railway of Chicago Installs Interlocking   12.3 MB
Belt Jct., Indianapolis, IN 1
Monon Changes Approved   760.8 KB
Belt Railway of Chicago 2
Belt Railway of Chicago Installs Interlocking   12.3 MB
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
Bloomington, IN 1
Monon Changes Approved   760.8 KB
Borden, IN 1
Monon Changes Approved   760.8 KB
braking distance 1
Rule 204   1.7 MB
Carbon Cliff, IL 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
carrier communication 1
Carrier Communication Equipment Installed on the Santa Fe   4.7 MB
Central of New Jersey 1
Non-Stop Permissive Signals   2.8 MB
centralized traffic control 9
A Review of 1940 and Prospects for the Future   1.3 MB
Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio   4.3 MB
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
Centralized Traffic Control Installed on the Missouri Pacific   3.7 MB
Centralized Traffic Control On the Chesapeake & Ohio   7.1 MB
CTC Installed on Norfolk & Western   5.1 MB
Protection at Hand-Thrown Switches in CTC Territory   1.6 MB
Railway Exhibit Presented to Museum of Science and Industry   636.5 KB
Simplified Signaling   426.9 KB
Chesapeake & Ohio 2
Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio   4.3 MB
Centralized Traffic Control On the Chesapeake & Ohio   7.1 MB
Chicago & North Western 1
Non-Stop Permissive Signals   2.8 MB
Chicago & Western Indiana 3
Belt Railway of Chicago Installs Interlocking   12.3 MB
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
Two New Interlockings on the C&WI   5.1 MB
Chicago North Shore & Milwaukee 1
Automatics Installed on North Shore   1.6 MB
Chicago Rapid Transit 1
Splicing a Submarine Cable   4.6 MB
Chicago, Burlington & Quincy 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Chicago, IL 7
Belt Railway of Chicago Installs Interlocking   12.3 MB
Flashing Yellow as a Fourth Aspect on the IC   2.6 MB
Illinois Central Uses Automatic Telephone System on Chicago Terminal Area   5.8 MB
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
Railway Exhibit Presented to Museum of Science and Industry   636.5 KB
Splicing a Submarine Cable   4.6 MB
Two New Interlockings on the C&WI   5.1 MB
Chicago, Indianapolis & Louisville 2
A Review of 1940 and Prospects for the Future   1.3 MB
Monon Changes Approved   760.8 KB
Chicago, Milwaukee, St. Paul & Pacific 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Chicago, Rock Island & Pacific 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Clagg, KY 1
Pennsylvania Installs CTC at Louisville, KY   4.9 MB
code-following track relay 1
P4 Code-Following Relay   1.1 MB
coded track circuits 1
Code-Following Polar Track Circuit Relay   1.4 MB
Cole, MO 1
Centralized Traffic Control Installed on the Missouri Pacific   3.7 MB
communication 1
Carrier Communication Equipment Installed on the Santa Fe   4.7 MB
Davenport, Rock Island & Northwestern 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Delta, MO 1
Signaling on 47 Miles of St. Louis Southwestern   12.6 MB
Denver & Salt Lake 2
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
Non-Stop Permissive Signals   1.4 MB
Denver, CO 1
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
Detroit, Toledo & Ironton 1
DT&I Installs Automatic Interlocking   5.0 MB
Dexter Jct., MO 1
Signaling on 47 Miles of St. Louis Southwestern   12.6 MB
drawbridge 1
Southern Pacific Installs Interlocking at Drawbridge   6.3 MB
East Moline, IL 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
East Portal, CO 1
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
electric interlocking 1
Belt Railway of Chicago Installs Interlocking   12.3 MB
electro-pneumatic interlocking 1
Two New Interlockings on the C&WI   5.1 MB
Fairmount, IL 1
Automatics Installed on the Wabash   4.0 MB
Fogg, IN 1
Monon Changes Approved   760.8 KB
Forest, VA 1
CTC Installed on Norfolk & Western   5.1 MB
Frank Rhea 1
Frank Rhea (obituary)   1.0 MB
Gault, P. M. 1
P. M. Gault obituary   1.2 MB
gauntlet track 1
Automatics Installed on North Shore   1.6 MB
Glencoe, IL 1
Automatics Installed on North Shore   1.6 MB
Godfrey, IL 1
Interlocking and Automatic Signals on the Alton   3.0 MB
Gordonsville, VA 1
Centralized Traffic Control On the Chesapeake & Ohio   7.1 MB
grade signals 1
Non-Stop Permissive Signals   1.4 MB
Great Britain 1
War on the British Railways   986.3 KB
ground tester 1
Ground Tester   704.0 KB
Hammond, IN 1
Monon Changes Approved   760.8 KB
highway crossings 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Homer, IL 1
Automatics Installed on the Wabash   4.0 MB
Illinois Central 5
Accident at Interlocking   1.3 MB
Flashing Yellow as a Fourth Aspect on the IC   2.6 MB
Illinois Central Uses Automatic Telephone System on Chicago Terminal Area   5.8 MB
Non-Stop Permissive Signals   2.8 MB
P. M. Gault obituary   1.2 MB
Illmo, MO 1
Signaling on 47 Miles of St. Louis Southwestern   12.6 MB
index 1
1941 index   3.7 MB
Indian Hill, IL 1
Automatics Installed on North Shore   1.6 MB
Indiana Harbor Belt 1
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
interlocking 10
A Review of 1940 and Prospects for the Future   1.3 MB
All-Relay Signal System Installed on Terminal Railroad of St. Louis   1.2 MB
Belt Railway of Chicago Installs Interlocking   12.3 MB
Electric Locking With No Derails   735.7 KB
Loss of Shunt   912.3 KB
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
Remote Control Installation   2.4 MB
Southern Pacific Installs Interlocking at Drawbridge   6.3 MB
Track Model Lamps   429.7 KB
Two New Interlockings on the C&WI   5.1 MB
Interstate Commerce Commission 6
A Simplified Signaling Arrangement For the Direction of Trains by Signal Indications   5.5 MB
ICC Manual Block Regulations   518.5 KB
Monon Changes Approved   760.8 KB
Non-Stop Permissive Signals   1.4 MB
Rule 204   1.7 MB
Simplified Signaling   426.9 KB
Lafayette Jct., IN 1
Monon Changes Approved   760.8 KB
Lafayette, IN 1
Monon Changes Approved   760.8 KB
Lindsay, VA 1
Centralized Traffic Control On the Chesapeake & Ohio   7.1 MB
Louisville & Nashville 1
Non-Stop Permissive Signals   1.4 MB
Louisville, KY 1
Pennsylvania Installs CTC at Louisville, KY   4.9 MB
Lynchburg, VA 1
CTC Installed on Norfolk & Western   5.1 MB
manual block signaling 1
ICC Manual Block Regulations   518.5 KB
Markham Yard, IL 1
Illinois Central Uses Automatic Telephone System on Chicago Terminal Area   5.8 MB
Matteson, IL 1
Flashing Yellow as a Fourth Aspect on the IC   2.6 MB
May Street, St. Louis, MO 1
All-Relay Signal System Installed on Terminal Railroad of St. Louis   1.2 MB
Michigan Central 1
Track Model Lamps   429.7 KB
Minneapolis, St. Paul & Sault Ste. Marie 1
Remote Control Installation   2.4 MB
Missouri Pacific 3
Centralized Traffic Control Installed on the Missouri Pacific   3.7 MB
Non-Stop Permissive Signals   1.4 MB
P. M. Gault obituary   1.2 MB
model boards 1
Track Model Lamps   429.7 KB
model railroad 1
Railway Exhibit Presented to Museum of Science and Industry   636.5 KB
Moffat Tunnel 1
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB
Moline, IL 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Monon 1
Monon Changes Approved   760.8 KB
Monon, IN 1
Monon Changes Approved   760.8 KB
Morris, OH 1
DT&I Installs Automatic Interlocking   5.0 MB
Museum of Science & Industry, Chicago, IL 1
Railway Exhibit Presented to Museum of Science and Industry   636.5 KB
New York Central 2
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
Simplified Signaling   426.9 KB
New York, Chicago & St. Louis 1
DT&I Installs Automatic Interlocking   5.0 MB
Norfolk & Western 1
CTC Installed on Norfolk & Western   5.1 MB
North Fond du Lac, WI 1
Remote Control Installation   2.4 MB
NX interlocking 1
Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt   6.9 MB
obituary 1
P. M. Gault obituary   1.2 MB
Odin, IL 1
Accident at Interlocking   1.3 MB
Orleans, IN 1
Monon Changes Approved   760.8 KB
Osage, MO 1
Centralized Traffic Control Installed on the Missouri Pacific   3.7 MB
Peach Creek, WV 1
Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio   4.3 MB
Pennsylvania 5
Frank Rhea (obituary)   1.0 MB
Non-Stop Permissive Signals   2.8 MB
P. M. Gault obituary   1.2 MB
Pennsylvania Installs CTC at Louisville, KY   4.9 MB
Protection at Hand-Thrown Switches in CTC Territory   1.6 MB
permissive signals 1
Non-Stop Permissive Signals   2.8 MB
personal 1
P. M. Gault obituary   1.2 MB
Philo, IL 1
Automatics Installed on the Wabash   4.0 MB
Phoebe, VA 1
CTC Installed on Norfolk & Western   5.1 MB
pneumatic interlocking 1
Two New Interlockings on the C&WI   5.1 MB
relay 2
Code-Following Polar Track Circuit Relay   1.4 MB
P4 Code-Following Relay   1.1 MB
remote control 1
Remote Control Installation   2.4 MB
Rock Island, IL 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Ryan, IL 1
Automatics Installed on the Wabash   4.0 MB
Schwendt, B. J. 1
Simplified Signaling   426.9 KB
Sidney, IL 1
Automatics Installed on the Wabash   4.0 MB
Soo Line 1
Remote Control Installation   2.4 MB
Southern 1
Non-Stop Permissive Signals   1.4 MB
Southern Pacific 1
Southern Pacific Installs Interlocking at Drawbridge   6.3 MB
St. Louis Southwestern 1
Signaling on 47 Miles of St. Louis Southwestern   12.6 MB
St. Louis, MO 2
All-Relay Signal System Installed on Terminal Railroad of St. Louis   1.2 MB
Interlocking Restored to Service At St. Louis Union Station   3.6 MB
Style CDP relay 1
Code-Following Polar Track Circuit Relay   1.4 MB
Style P4 relay 1
P4 Code-Following Relay   1.1 MB
switch locks 1
Protection at Hand-Thrown Switches in CTC Territory   1.6 MB
switch protection 1
Protection at Hand-Thrown Switches in CTC Territory   1.6 MB
telephones 1
Illinois Central Uses Automatic Telephone System on Chicago Terminal Area   5.8 MB
Terminal Railroad Association of St. Louis 2
All-Relay Signal System Installed on Terminal Railroad of St. Louis   1.2 MB
Interlocking Restored to Service At St. Louis Union Station   3.6 MB
Terre Haute, IN 1
Protection at Hand-Thrown Switches in CTC Territory   1.6 MB
Tilton, IL 1
Automatics Installed on the Wabash   4.0 MB
timetable and train order 1
A Simplified Signaling Arrangement For the Direction of Trains by Signal Indications   5.5 MB
Tolono, IL 1
Automatics Installed on the Wabash   4.0 MB
Topeka, KS 1
Carrier Communication Equipment Installed on the Santa Fe   4.7 MB
Union Pacific 1
Non-Stop Permissive Signals   1.4 MB
Union Switch & Signal 4
Belt Railway of Chicago Installs Interlocking   12.3 MB
Code-Following Polar Track Circuit Relay   1.4 MB
Loss of Shunt   912.3 KB
P4 Code-Following Relay   1.1 MB
Wabash 3
All-Relay Signal System Installed on Terminal Railroad of St. Louis   1.2 MB
Automatics Installed on the Wabash   4.0 MB
Belt Railway of Chicago Installs Interlocking   12.3 MB
Wann, IL 1
Interlocking and Automatic Signals on the Alton   3.0 MB
Watertown, IL 1
Protection at 38 Street Crossings In and Near Rock Island, Ill   3.1 MB
Winnetka, IL 1
Automatics Installed on North Shore   1.6 MB
World War II 1
War on the British Railways   986.3 KB
Zuni, CO 1
Automatic Signaling and Tunnel Protection On the Denver & Salt Lake   6.7 MB

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