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