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.
30th Street Station, Philadelphia, PA 1
1931 1
1931 index
6.6 MB
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accident 1
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A Lesson from a False-Clear Failure
577.9 KB
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all-relay interlocking 1
American Railway Engineering Association 1
Arlington Heights, IL 1
Arlington Park, IL 1
Atchison, Topeka & Santa Fe 2
Atlantic Coast Line 2
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Call-on Route Control
1.4 MB
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Precision-Base Lamps
1.4 MB
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Aurora, IL 1
automatic interlocking 2
Baltimore & Ohio 1
Baltimore & Ohio Chicago Terminal 2
Barrington, IL 1
Belmont, CA 1
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Speed Control of Crossing Signals
586.7 KB
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Berwick, OH 1
Birmingham, MO 1
Boston & Maine 2
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Economy of Smaller Towers
539.7 KB
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Efficiency Tests
1.9 MB
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Broad St., Philadelphia, PA 2
Buffalo, Rochester & Pittsburgh 1
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Efficiency Tests
1.9 MB
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California 1
Camp Douglas, WI 1
Canadian National 1
Canadian Pacific 1
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Economy of Smaller Towers
539.7 KB
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Central of New Jersey 2
centralized traffic control 9
Chemin de fer de l'Est 1
Cherry Street, Toronto, Ontario 1
Chicago & Illinois Midland 1
Chicago & North Western 3
Chicago Great Western 1
Chicago, Burlington & Quincy 5
Chicago, IL 2
Chicago, Milwaukee, St. Paul & Pacific 6
Chicago, Rock Island & Pacific 5
Chicago, St. Paul, Minneapolis & Omaha 1
Cleveland, Cincinnati, Chicago & St. Louis 3
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Economy of Smaller Towers
539.7 KB
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Efficiency Tests
1.9 MB
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Sequence of Levers
552.2 KB
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crossing flashers 1
Danville, IL 1
Delaware & Hudson 1
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Protecting CTC Switches
2.9 MB
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Delaware, Lackawanna & Western 2
Des Plaines, IL 1
Detroit, MI 1
Deval, IL 1
Dover, NJ 1
Downers Grove, IL 1
economics 1
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Competition
774.2 KB
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Edison, Thomas 1
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Thomas A. Edison (obituary)
1.1 MB
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electric interlocking 1
false proceed failures 1
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A Lesson from a False-Clear Failure
577.9 KB
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France 1
Galesburg, IL 1
General Railway Signal 2
Gladstone, NJ 1
government subsidies 1
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Competition
774.2 KB
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Grand Trunk Western 1
Great Britain 2
Great Northern 2
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Efficiency Tests
1.9 MB
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Precision-Base Lamps
1.4 MB
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Great Western 2
Hammond, IN 1
HD Jct., MO 1
Herington, KS 2
highway crossings 1
Hoboken, NJ 1
Illinois Central 2
index 1
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1931 index
6.6 MB
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Indianapolis Union 1
Indianapolis, IN 1
Interstate Commerce Commission 1
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A Lesson from a False-Clear Failure
577.9 KB
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IU Tower, Indianapolis, IN 1
John Street, Toronto, Ontario 1
Lackawaxen, PA 1
Lafayette, IN 1
Lanes Crossing, NJ 1
London Metropolitan 1
London Underground 1
London, England 2
Louisville & Nashville 2
Michigan Central 1
Missouri Pacific 6
Montclair, NJ 1
Mott Haven, NY 2
Nashville, Chattanooga & St. Louis 1
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Fight for Your Job
3.0 MB
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Nelson, IL 1
New York Central 9
New York, Chicago & St. Louis 1
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Efficiency Tests
1.9 MB
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New York, New Haven & Hartford 1
New York, NY 2
Newark, NJ 1
Niagara Falls, Ontario 1
Norfolk & Western 1
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Call-on Route Control
1.4 MB
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Northern Pacific 2
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Derails in Passing Sidings
1.1 MB
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Efficiency Tests
1.9 MB
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obituary 1
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Thomas A. Edison (obituary)
1.1 MB
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Omaha, NE 1
Pekin, IL 1
Penn, Philadelphia, PA 1
Pennsylvania 10
Peoria & Pekin Union 1
Peoria, IL 1
personal 1
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Thomas A. Edison (obituary)
1.1 MB
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Peru, IN 1
Philadelphia, PA 3
Polo, MO 1
Portage, WI 1
Raritan, NJ 1
relay assembly 1
relay repair 1
relays 1
remote control 1
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What Can Be Done Now?
736.8 KB
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reserve yellow 1
Rice, IL 1
Rosas, PA 1
Ruislip, England 1
Scott Street, Toronto, Ontario 1
Secaucus, NJ 1
signal repair shop 1
South Branch Bridge 1
Southern 1
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Derails in Passing Sidings
1.1 MB
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Southern Pacific 2
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Protecting CTC Switches
2.9 MB
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Speed Control of Crossing Signals
586.7 KB
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Springfield, IL 1
St. Charles Air Line 1
St. Louis, MO 3
St. Louis-San Francisco 1
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Efficiency Tests
1.9 MB
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Stanley, OH 1
State Line, IN 1
Terminal Railroad Association of St. Louis 2
Toronto Terminals 1
Toronto, Ontario 1
Tower A, Omaha, NE 1
Tower B, Omaha, NE 1
Tower C, Omaha, NE 1
Tower NY, IL 1
track circuits 1
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The AC DC Track Circuit
1.5 MB
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train control 2
Trenton, NJ 1
Trois Rivieres, Quebec 1
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Economy of Smaller Towers
539.7 KB
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Type E signals 1
Union Pacific 2
Union Switch & Signal 1
Uxbridge, England 1
Valley Park, MO 1
Wabash 4
West Nelson, IL 1
Western Pacific 1
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Efficiency Tests
1.9 MB
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