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.
1957 1
1957 index
2.9 MB
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"ID" Tower, St. Louis, MO 1
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Consolidation cuts costs
1.1 MB
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"MS" Tower, St. Louis, MO 1
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Consolidation cuts costs
1.1 MB
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absolute permissive block signaling 2
accident 1
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ICC Reports on NYC wreck
205.5 KB
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Albion, PA 1
all-relay interlocking 4
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Consolidation cuts costs
1.1 MB
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Lehigh Valley combines interlockings
404.0 KB
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More automation for signaling in 1957
1.2 MB
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Two interlockings save time and money
547.8 KB
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alternating current track circuits 1
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Track circuit developments in Europe
234.8 KB
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Ashland, KY 1
Ashtabula, OH 1
aspects and indications 5
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How long sidings save train time
465.2 KB
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How to make non-stop meet with CTC
576.9 KB
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Two interlockings save time and money
547.8 KB
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What's the Answer: Spring switches?
200.0 KB
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Why Cotton Belt installed CTC on entire main line
914.0 KB
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Association of American Railroads 1
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Track circuit developments in Europe
234.8 KB
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Atchison, Topeka & Santa Fe 3
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How to make non-stop meet with CTC
576.9 KB
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More automation for signaling in 1957
1.2 MB
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What's the answer: Slotting relay?
361.2 KB
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Atlanta, GA 1
Atwater, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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audio frequency overlay track circuits 1
Aurora, IL 1
automatic block signaling 4
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How to make non-stop meet with CTC
576.9 KB
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Seaway diverts CN mainline
532.3 KB
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Signal controls by track circuit only
575.8 KB
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Why Cotton Belt installed CTC on entire main line
914.0 KB
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automatic interlocking 1
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Seaway diverts CN mainline
532.3 KB
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automatic retarder yard 1
automatic switching 1
automatic train identification 1
automatic train stop 3
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How to make non-stop meet with CTC
576.9 KB
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ICC Reports on NYC wreck
205.5 KB
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Lehigh Valley has check-in, check-out
755.3 KB
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automation 1
axle counters 1
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Track circuit developments in Europe
234.8 KB
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Baltimore & Ohio 1
Bangor & Aroostook 1
Bay View, NY 1
Beaumont, CA 1
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How long sidings save train time
465.2 KB
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Belgium 1
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Track circuit developments in Europe
234.8 KB
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Belt Railway of Chicago 1
Bessemer & Lake Erie 2
Big Four 1
Big Sandy Jct., KY 1
Boston & Albany 1
Boston & Maine 2
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Elevation causes signal changes
893.2 KB
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More automation for signaling in 1957
1.2 MB
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Breckenridge, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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Brinkley, AR 1
Buffalo, NY 1
call-on signals 1
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How long sidings save train time
465.2 KB
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Canadian National 3
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More automation for signaling in 1957
1.2 MB
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Seaway diverts CN mainline
532.3 KB
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Why not more Centralized Traffic Control?
344.2 KB
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Canadian Pacific 2
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Seaway diverts CN mainline
532.3 KB
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Survey shows progress in signal education
330.6 KB
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Central Vermont 1
centralized traffic control 13
Chesapeake & Ohio 2
Chicago Transit Authority 1
Chicago, Burlington & Quincy 1
Chicago, IL 2
Chicago, Milwaukee, St. Paul & Pacific 1
Clearing, Chicago, IL 1
Cleveland, Cincinnati, Chicago & St. Louis 1
Cleveland, OH 1
Clyffeside, KY 1
code line 1
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CTC on the SP has special devices
518.8 KB
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coded track circuits 3
color light signals 1
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Lehigh Valley combines interlockings
404.0 KB
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Colton, CA 1
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How long sidings save train time
465.2 KB
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Conneaut, OH 1
consolidation of interlocking towers 1
Conway, PA 1
Cornwall, Ontario 1
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Seaway diverts CN mainline
532.3 KB
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Corsicana, TX 1
Cotton Belt 1
Coxton, PA 1
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Lehigh Valley combines interlockings
404.0 KB
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Cumberland, MD 1
Delano, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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Delaware, Lackawanna & Western 1
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Lehigh Valley combines interlockings
404.0 KB
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Dexter Jct., MO 1
distant signals 1
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How long sidings save train time
465.2 KB
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Dock Jct., PA 1
Doran, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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dragging equipment detectors 1
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CTC on the SP has special devices
518.8 KB
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drill signals 1
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Consolidation cuts costs
1.1 MB
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Eads Bridge, St. Louis, MO 1
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Consolidation cuts costs
1.1 MB
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earthquake detectors 1
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CTC on the SP has special devices
518.8 KB
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East St. Louis, IL 2
electric lock switches 1
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GN CTC's 175 miles of mainline
635.9 KB
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electric slot 1
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What's the answer: Slotting relay?
361.2 KB
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electro-pneumatic interlocking 1
electro-pneumatic switches 1
electronic track circuits 1
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Track circuit developments in Europe
234.8 KB
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Elkhart, IN 1
Erie, PA 2
facing point locks 1
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What's the Answer: Spring switches?
200.0 KB
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false proceed failures 1
false restrictive failures 1
Filer, PA 1
Fresno, CA 1
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How to make non-stop meet with CTC
576.9 KB
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General Railway Signal 12
Germany 1
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Track circuit developments in Europe
234.8 KB
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Girard Jct., PA 1
grade separation 1
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Elevation causes signal changes
893.2 KB
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Grand Trunk Western 1
Great Britain 1
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Track circuit developments in Europe
234.8 KB
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Great Northern 2
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GN CTC's 175 miles of mainline
635.9 KB
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More automation for signaling in 1957
1.2 MB
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Griswold Signal 1
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CTC on the SP has special devices
518.8 KB
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Hancock, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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Harbor Creek, PA 1
Hazelton, PA 1
Helena, MT 1
high-speed turnouts 1
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How to make non-stop meet with CTC
576.9 KB
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highway crossing 1
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Lehigh Valley combines interlockings
404.0 KB
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highway crossings 6
Illinois Central 1
Illmo, MO 1
index 1
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1957 index
2.9 MB
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Indio, CA 1
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How long sidings save train time
465.2 KB
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inductive check-in, check-out system 1
interlocking 8
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Consolidation cuts costs
1.1 MB
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Elevation causes signal changes
893.2 KB
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Lehigh Valley combines interlockings
404.0 KB
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More automation for signaling in 1957
1.2 MB
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One Machine Controls Two Plants
2.2 MB
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Relay Interlocking Saves Time at Yard Entrances
2.5 MB
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Seaway diverts CN mainline
532.3 KB
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Two interlockings save time and money
547.8 KB
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intermittent inductive automatic train stop 1
Interstate Commerce Commission 2
Jonesboro, AR 1
Lehigh Valley 1
Lehighton, PA 1
Lehing Valley 1
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Lehigh Valley combines interlockings
404.0 KB
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letter to the editor 1
Livingston, MT 1
long sidings 2
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How long sidings save train time
465.2 KB
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How to make non-stop meet with CTC
576.9 KB
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Louisville & Nashville 2
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Kinks. Testing "KP" relays
191.2 KB
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More automation for signaling in 1957
1.2 MB
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Lucas, LA 1
lunar white 1
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How long sidings save train time
465.2 KB
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manual block 2
manual block remote control 1
manual block signaling 1
Meadville Jct., PA 1
mechanical interlocking 1
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Lehigh Valley combines interlockings
404.0 KB
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mechanical semaphores 1
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What's the answer: Slotting relay?
361.2 KB
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Michigan Central 1
Missouri Pacific 3
Morris, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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Morrisburg, Ontario 1
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Seaway diverts CN mainline
532.3 KB
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motor car indicators 1
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How to make non-stop meet with CTC
576.9 KB
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Mt. Pleasant, TX 1
Nashville, Chattanooga & St. Louis 1
Netherlands 2
Netherlands Railways 1
New York Central 4
New York City Transit 2
New York, NY 1
Niland, CA 1
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How long sidings save train time
465.2 KB
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Norfolk & Western 1
North Bessemer, PA 1
North Junction IL 1
North Platte, NE 1
Northern Maine Jct., ME 1
Northern Pacific 1
Nottingham, OH 1
Ontario Northland 1
Palm Springs, CA 1
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How long sidings save train time
465.2 KB
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Paragould, AR 1
Pennock, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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Pennsylvania 3
Pine Bluff, AR 1
Pittsburgh & Lake Erie 1
Pittsburgh, PA 1
Pittston Jct., PA 1
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Lehigh Valley combines interlockings
404.0 KB
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Poplar St., St. Louis, MO 1
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Consolidation cuts costs
1.1 MB
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power switches 2
Reading 1
relay interlocking 1
remote-control interlocking 1
Richmond, Fredericksburg & Potomac 1
Ripley, NY 1
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ICC Reports on NYC wreck
205.5 KB
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route interlocking 2
Russell, KY 1
Seaboard Air Line 1
searchlight signals 3
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GN CTC's 175 miles of mainline
635.9 KB
|
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How to make non-stop meet with CTC
576.9 KB
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Seaway diverts CN mainline
532.3 KB
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self-propelled cars 1
semi-automatic signaling 1
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What's the answer: Slotting relay?
361.2 KB
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Shreveport, LA 1
shunting sensitivity 2
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Lehigh Valley has check-in, check-out
755.3 KB
|
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Track circuit developments in Europe
234.8 KB
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Siemens manual block 1
signal education 1
signal slot 1
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What's the answer: Slotting relay?
361.2 KB
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snow melters 3
South La Grange, ME 1
Southern 1
Southern Pacific 5
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CTC on the SP has special devices
518.8 KB
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How long sidings save train time
465.2 KB
|
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More automation for signaling in 1957
1.2 MB
|
|
Survey shows progress in signal education
330.6 KB
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What's the answer: Slotting relay?
361.2 KB
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spring switches 2
St. Albans, VT 1
St. Lawrence Seaway 1
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Seaway diverts CN mainline
532.3 KB
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St. Louis Southwestern 2
St. Louis, MO 1
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Consolidation cuts costs
1.1 MB
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St. Louis-San Francisco 2
Stockton, CA 1
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How to make non-stop meet with CTC
576.9 KB
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Style "KP" relays 1
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Kinks. Testing "KP" relays
191.2 KB
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switchtenders 1
Switzerland 1
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Track circuit developments in Europe
234.8 KB
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Terminal Association of St. Louis 2
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Consolidation cuts costs
1.1 MB
|
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Survey shows progress in signal education
330.6 KB
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Texarkana, AR 1
Texas & Pacific 2
Texmo Jct., LA 1
Thebes, IL 1
Toledo, OH 1
track circuits 1
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Track circuit developments in Europe
234.8 KB
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track instruments 1
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Track circuit developments in Europe
234.8 KB
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traffic signals 1
train interference 1
Trakode 2
Transport Products 1
Tyler, TX 1
Union Pacific 2
Union Route interlocking 1
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Consolidation cuts costs
1.1 MB
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Union Switch & Signal 9
vane relays 1
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Track circuit developments in Europe
234.8 KB
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Wabash 2
Western Railroad Supply 1
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CTC on the SP has special devices
518.8 KB
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Willmar, MN 1
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GN CTC's 175 miles of mainline
635.9 KB
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Winchester, MA 1
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Elevation causes signal changes
893.2 KB
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yard track indicators 1
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How to make non-stop meet with CTC
576.9 KB
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Youngstown, OH 1
Yuma, AZ 1
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How long sidings save train time
465.2 KB
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