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.
1936 1
1936 index
4.0 MB
|
"Abraham Lincoln" 1
"Royal Blue" 1
absolute permissive block signaling 2
accident 2
all-relay interlocking 1
Alleghany, VA 1
Alton 2
Amqui, TN 1
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Electric Lighting of Semaphores
867.6 KB
|
annunciator 1
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Annunciator Circuits
2.6 MB
|
approach lighting 1
Atchison, Topeka & Santa Fe 6
|
Demands for Modern Signaling
12.1 MB
|
|
Importance of Warning Whistle
6.8 MB
|
|
Maintainers' Blueprint Plans
4.2 MB
|
|
Motor Car Indicators
2.9 MB
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Relay Shipment Container
2.0 MB
|
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Testing New Interlocking
3.5 MB
|
automatic block signaling 6
automatic interlocking 5
automatic train control 1
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Cab Signaling
7.8 MB
|
automatic train stop 4
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Accident in Automatic Block Signal Territory
4.7 MB
|
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Cab Signaling
7.8 MB
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Demands for Modern Signaling
12.1 MB
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|
Train Control on the B&O Diesel
2.6 MB
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Baltimore & Ohio 5
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Flood Damage to Signaling
5.0 MB
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Railroads Clean Up After Flood Waters
33.3 MB
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Slide Detector Fences
4.3 MB
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Train Control on the B&O Diesel
2.6 MB
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What Is the Capacity of a Single-Track Line?
2.0 MB
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Belt Line Jct., Detroit, MI 1
Big Elk, DE 1
Boston & Albany 2
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Flood Damage to Signaling
5.0 MB
|
|
Railroads Clean Up After Flood Waters
33.3 MB
|
Boston & Maine 3
cab signaling 4
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Bad Collisions on Best Railroads
2.5 MB
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|
Cab Signaling
7.8 MB
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Demands for Modern Signaling
12.1 MB
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Importance of Warning Whistle
6.8 MB
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Canadian Pacific 4
capacity 1
centralized traffic control 7
Chesapeake & Ohio 5
Chicago & North Western 7
Chicago Great Western 1
Chicago, Burlington & Quincy 3
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Demands for Modern Signaling
12.1 MB
|
|
Double-Caution Signaling
3.4 MB
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Signals Installed at 26 Crossings in Dubuque, IA
13.8 MB
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Chicago, Milwaukee, St. Paul & Pacific 4
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Demands for Modern Signaling
12.1 MB
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Signals Installed at 26 Crossings in Dubuque, IA
13.8 MB
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Speed at Automatic Plants
4.9 MB
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Testing Automatic Interlockings
3.5 MB
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Chicago, Rock Island & Gulf 1
Chicago, Rock Island & Pacific 3
coded track circuits 3
color light signals 3
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Alining Signals on Curves
3.7 MB
|
|
Back Locks on Approach Signals
1.4 MB
|
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Lights Interfere With View of Signals
2.3 MB
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Croton, NY 1
Dallas Union Terminal 1
Dallas, TX 1
Davis, DE 1
Delaware, Lackawanna & Western 5
Detroit Belt 1
Detroit, MI 1
DN-22L relay 1
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Light-out Relay for AC or DC
2.3 MB
|
DN-22P power transfer relay 1
Dubuque, IA 1
East Bridge Jct., LA 1
Edgington, KY 1
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C&O Remote Control
12.8 MB
|
Edinburgh, Scotland 1
electric interlocking 3
electric lighting 1
electro-hydraulic gates 1
electro-pneumatic interlocking 1
Elmira, NY 1
entry-exit interlocking 1
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NX Electric Interlocking
3.8 MB
|
Erie 3
flashing light signals 2
flooding 3
forced-drop lever locks 1
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Lost Motion in Locking
3.0 MB
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Ft. Worth & Denver City 1
General Railway Signal 11
Great Northern 1
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Slide Detector Fences
4.3 MB
|
Gulf, Colorado & Santa Fe 1
H-2 searchlight signals 1
Hall Switch & Signal 1
Henderson, KY 1
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Electric Lighting of Semaphores
867.6 KB
|
high-speed trains 1
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Demands for Modern Signaling
12.1 MB
|
highway crossings 13
Illinois 1
Illinois Central 4
Illinois Commerce Commission 2
index 1
|
1936 index
4.0 MB
|
interlocking 20
Interstate Commerce Commission 3
|
Accident in Automatic Block Signal Territory
4.7 MB
|
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Cab Signaling
7.8 MB
|
|
Importance of Warning Whistle
6.8 MB
|
Jerry's Run, VA 1
Johnson Compensator 1
Johnson Signal 1
Kalamazoo, MI 1
Leavittsburg, OH 1
Lehigh Valley 2
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Flood Damage to Signaling
5.0 MB
|
|
Railroads Clean Up After Flood Waters
33.3 MB
|
lenses 1
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Alining Signals on Curves
3.7 MB
|
lift bridge 1
Limeville, KY 1
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C&O Remote Control
12.8 MB
|
Lockport, IL 1
London, England 1
Los Angeles, CA 1
Louisiana & Arkansas 1
Louisville & Nashville 2
Mantua, OH 1
mechanical interlocking 1
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Lost Motion in Locking
3.0 MB
|
mechanical locking 1
Michigan Central 4
Mississippi River bridge, New Orleans, LA 1
Missouri Pacific 7
Missouri-Kansas-Texas 2
Model 2 electric interlocking 1
Model 2A semaphore 1
Model 5 electric interlocking 1
Montreal, Quebec 1
motor car indicators 2
National Recovery Administration Act 1
New Orleans Public Belt 1
New Orleans, LA 1
New York 1
New York Central 9
New York Rapid Transit 1
New York, New Haven & Hartford 3
New York, NY 1
New York, Ontario & Western 1
Newark, NJ 1
Norfolk & Western 4
North East, MD 1
Northern Pacific 1
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Slide Detector Fences
4.3 MB
|
NX interlocking 1
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NX Electric Interlocking
3.8 MB
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obituary 1
Outremont, Quebec 1
Pennsylvania 13
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Bad Collisions on Best Railroads
2.5 MB
|
|
Cab Signaling
7.8 MB
|
|
Double-Caution Signaling
3.4 MB
|
|
Flood Damage to Signaling
5.0 MB
|
|
Interlocking and Remote Control on Erie
18.9 MB
|
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Lost Motion in Locking
3.0 MB
|
|
New Electro-Pneumatic Plant On Pennsylvania at Newark
23.9 MB
|
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Railroads Clean Up After Flood Waters
33.3 MB
|
|
Remote Control on the Pennsylvania
14.5 MB
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|
Slide Detector Fences
4.3 MB
|
|
Slide Detector Signals
12.9 MB
|
|
Testing New Interlocking
3.5 MB
|
|
What Is the Capacity of a Single-Track Line?
2.0 MB
|
personal 1
phantom indications 1
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Phantom Indications
1.8 MB
|
Philadelphia & Reading 1
Philadelphia Rapid Transit 1
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Accuracy of Timing Relays
2.2 MB
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Pittsburgh & Lake Erie 2
|
Flood Damage to Signaling
5.0 MB
|
|
Railroads Clean Up After Flood Waters
33.3 MB
|
Pneumatic Signal 1
polarized track circuits 1
position light signals 2
power switches 1
Reading 3
relay 2
relays 2
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Flashing Light Signal Failures
2.6 MB
|
|
Relay Shipment Container
2.0 MB
|
remote control 4
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C&O Remote Control
12.8 MB
|
|
Demands for Modern Signaling
12.1 MB
|
|
Interlocking and Remote Control on Erie
18.9 MB
|
|
Remote Control on the Pennsylvania
14.5 MB
|
Roanoke, VA 1
rock slide fences 1
|
Slide Detector Signals
12.9 MB
|
route interlocking 1
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NX Electric Interlocking
3.8 MB
|
Rudd, A. H. 1
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Cab Signaling
7.8 MB
|
Saxby & Farmer 1
searchlight signals 1
semaphore signals 5
Shamokin, PA 1
signal aspects 1
|
Double-Caution Signaling
3.4 MB
|
signal blueprints 1
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Maintainers' Blueprint Plans
4.2 MB
|
signal indications 2
|
Demands for Modern Signaling
12.1 MB
|
|
Double-Caution Signaling
3.4 MB
|
single-track line 1
slide detector fences 1
|
Slide Detector Fences
4.3 MB
|
Southern 2
|
Alining Signals on Curves
3.7 MB
|
|
Slide Detector Fences
4.3 MB
|
Southern Pacific 6
Southport, LA 1
speed limits 1
spring switches 1
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Demands for Modern Signaling
12.1 MB
|
St. Louis Southwestern 1
St. Louis-San Francisco 1
Standard Signal 1
stations 1
|
Annunciator Circuits
2.6 MB
|
Stiles, T. George 1
streamlined passenger trains 1
|
Demands for Modern Signaling
12.1 MB
|
Syracuse Jct., NY 1
Syracuse, NY 2
T. George Stiles 1
Taylor Signal 1
telephone train order signals 1
testing 3
|
Testing Automatic Interlockings
3.5 MB
|
|
Testing New Interlocking
1.7 MB
|
|
Testing New Interlocking
3.5 MB
|
Texas & New Orleans 3
Texas & Pacific 3
time element relays 1
|
Accuracy of Timing Relays
2.2 MB
|
Topeka, KS 1
traffic signals 1
triple underpass, Dallas, TX 1
Tuckahoe, WV 1
Union Pacific 2
Union Switch & Signal 9
Wabash 2
Walton, VA 1
Waterloo Station, London, England 1
Waukegan, IL 1
Waverly Station, Edinburgh, Scotland 1
Wayne Jct., MI 1
West Bridge Jct., LA 1
Western Maryland 2
|
Flood Damage to Signaling
5.0 MB
|
|
Railroads Clean Up After Flood Waters
33.3 MB
|