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.
1916 1
1916 index
9.4 MB
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"TRAIN" indicators 1
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TRAIN signs on the Santa Fe
258.1 KB
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alternating current signaling 1
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Reconstruction of New Haven Signals
315.5 KB
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alternating current track circuits 1
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AC Signaling for Chicago Terminals
585.7 KB
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aspects and indications 2
Atchison, Topeka & Santa Fe 1
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TRAIN signs on the Santa Fe
258.1 KB
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automatic block signaling 6
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AC Signaling for Chicago Terminals
585.7 KB
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AC Signaling in the Centre Street Loop
924.9 KB
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Government Drawbridge Signaling
670.2 KB
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Methods of Locating Automatic Signals
428.3 KB
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New Automatic Signals on Grand Trunk
997.0 KB
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Signaling the Milwaukee's Electric Zone
624.8 KB
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Avery, ID 1
Blue Island, IL 1
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New Automatic Signals on Grand Trunk
997.0 KB
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Boston & Lowell 1
Boston & Providence 1
Boston, Lowell & Nashua 1
braking distance 1
Brooklyn Bridge, New York, NY 1
Brooklyn Rapid Transit 1
Bryn Mawr, PA 1
Butte, MT 1
Chestnut Hill, PA 1
Chicago & North Western 1
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AC Signaling for Chicago Terminals
585.7 KB
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Chicago & Western Indiana 1
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AC Signaling for Chicago Terminals
585.7 KB
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Chicago, IL 3
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A New York Central Plant in Chicago
590.7 KB
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AC Signaling for Chicago Terminals
585.7 KB
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New Automatic Signals on Grand Trunk
997.0 KB
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Chicago, Milwaukee & St. Paul 1
Chicago, Rock Island & Pacific 1
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Government Drawbridge Signaling
670.2 KB
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Corning Glass Works 1
Davenport, IA 1
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Government Drawbridge Signaling
670.2 KB
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DC relay 1
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The New Ziegler Relay
396.2 KB
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direct current relay 1
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The New Ziegler Relay
396.2 KB
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dog charts 1
drafting 1
electric interlocking 2
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A New York Central Plant in Chicago
590.7 KB
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Reconstruction of New Haven Signals
315.5 KB
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electrification 2
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AC Signaling for Chicago Terminals
585.7 KB
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Reconstruction of New Haven Signals
315.5 KB
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electro-pneumatic interlocking 3
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Government Drawbridge Signaling
670.2 KB
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Reconstruction of New Haven Signals
315.5 KB
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Signaling a New Street Car Terminal
437.5 KB
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electro-pneumatic trip stops 1
Elsdon, IL 1
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New Automatic Signals on Grand Trunk
997.0 KB
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Erie, PA 1
Federal Signal 2
Finlen, MT 1
Frazer, PA 1
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Some Examples of Early Signaling
351.5 KB
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General Railway Signal 2
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A New York Central Plant in Chicago
590.7 KB
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Service Record of Position-Light Signals
580.8 KB
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Government Bridge, Rock Island, IL 1
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Government Drawbridge Signaling
670.2 KB
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Grand Trunk Western 1
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New Automatic Signals on Grand Trunk
997.0 KB
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Hall Switch & Signal 1
Harlowton, MT 1
Harvey, IL 1
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New Automatic Signals on Grand Trunk
997.0 KB
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headway 1
highway crossings 1
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AC Signaling for Chicago Terminals
585.7 KB
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index 1
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1916 index
9.4 MB
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Interborough Rapid Transit 1
interlocking 7
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A New York Central Plant in Chicago
590.7 KB
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AC Signaling for Chicago Terminals
585.7 KB
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Government Drawbridge Signaling
670.2 KB
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Method for Checking Mechanical Locking
322.8 KB
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New Automatic Signals on Grand Trunk
997.0 KB
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Reconstruction of New Haven Signals
315.5 KB
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Signaling a New Street Car Terminal
437.5 KB
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interlocking towers 1
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A New York Central Plant in Chicago
590.7 KB
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Irvineton, PA 1
Kinzua, PA 1
left-hand upper quadrant semaphores 1
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Reconstruction of New Haven Signals
315.5 KB
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Lennep, MT 1
Louisville & Nashville 1
Manhattan Bridge, New York, NY 1
mechanical interlocking 1
Mississippi River 1
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Government Drawbridge Signaling
670.2 KB
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New Haven, CT 1
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Reconstruction of New Haven Signals
315.5 KB
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New Rochelle, NY 1
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Reconstruction of New Haven Signals
315.5 KB
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New York Central 2
New York Municipal Railway 1
New York, Chicago & St. Louis 1
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A New York Central Plant in Chicago
590.7 KB
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New York, New Haven & Hartford 1
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Reconstruction of New Haven Signals
315.5 KB
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New York, NY 1
Newark, NJ 1
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Signaling a New Street Car Terminal
437.5 KB
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Old Colony 1
Overbrook, PA 1
Paoli, PA 1
Pennsylvania 3
Philadelphia & Erie 1
Philadelphia, PA 2
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Service Record of Position-Light Signals
580.8 KB
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Some Examples of Early Signaling
351.5 KB
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Piedmont, MT 1
position light signals 1
Public Service Railway 1
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Signaling a New Street Car Terminal
437.5 KB
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relay 1
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The New Ziegler Relay
396.2 KB
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Robinson, William 1
Rock Island, IL 1
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Government Drawbridge Signaling
670.2 KB
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Rudd, A. H. 2
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Service Record of Position-Light Signals
580.8 KB
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Some Examples of Early Signaling
351.5 KB
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semaphore signals 1
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TRAIN signs on the Santa Fe
258.1 KB
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Somerset, MA 1
Southern Pacific 1
Stamford, CT 1
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Reconstruction of New Haven Signals
315.5 KB
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Thornton, IL 1
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New Automatic Signals on Grand Trunk
997.0 KB
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Three Forks, MT 1
track circuit 1
track circuits 1
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AC Signaling for Chicago Terminals
585.7 KB
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trip stops 1
Union Electric Signal 1
Union Switch & Signal 5
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Service Record of Position-Light Signals
580.8 KB
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Signaling a New Street Car Terminal
437.5 KB
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Signaling the Milwaukee's Electric Zone
624.8 KB
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TRAIN signs on the Santa Fe
258.1 KB
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William Robinson, Inventor of the Track Circuit
373.1 KB
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United Electric Apparatus 1
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The New Ziegler Relay
396.2 KB
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West Chester, PA 1
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Some Examples of Early Signaling
351.5 KB
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West Somerville, MA 1
Westinghouse, George 1
Wiegand, F. B. 1
Williamsburg Bridge, New York, NY 1
WIlmington Jct., MA 1
Woodlawn Jct., NY 1
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Reconstruction of New Haven Signals
315.5 KB
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Ziegler relay 1
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The New Ziegler Relay
396.2 KB
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