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.
absolute permissive block signaling 1
ICC 50-MPH Signal Hearing
6.9 MB
|
accident 2
accidents 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
approach lighting 1
|
The User of Signaling
895.2 KB
|
Atchison, Topeka & Santa Fe 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
Atlantic Coast Line 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
automatic block signaling 7
|
Automatic Block With Spring Switches on the Central of Georgia
5.3 MB
|
|
Burlington Tests Show Signals Adequate
1.3 MB
|
|
CTC Over Automatic Block
443.6 KB
|
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
ICC Signaling Investigation
770.4 KB
|
|
Reverse Running on the Pennsylvania
2.8 MB
|
|
The User of Signaling
895.2 KB
|
Baltimore & Ohio 1
|
G. H Dryden retires
455.7 KB
|
Baltimore, MD 1
Belleville, KS 1
braking distance 1
Buda, IL 1
Bureau, IL 1
call-on signals 1
Canadian Pacific 1
Central of Georgia 1
centralized traffic control 6
Chicago, Burlington & Quincy 3
Chicago, IL 1
|
ICC Signal Hearing
1.3 MB
|
Chicago, Milwaukee, St. Paul & Pacific 1
|
ICC Signaling Investigation
770.4 KB
|
Chicago, Rock Island & Pacific 3
Clay Center, KS 1
coded track circuits 1
|
Catch Up With Progress
450.6 KB
|
Columbus, GA 1
Cotton Belt 1
Dearborn, MI 1
|
DT&I Tests Radio
4.3 MB
|
Delray, MI 2
Denver & Salt Lake 1
Denver, CO 1
Detroit, MI 1
Dryden, G. H. 1
|
G. H Dryden retires
455.7 KB
|
efficiency 1
|
Improved Signal Performance
446.8 KB
|
electro-mechanical interlocking 1
Erie 1
Flat Rock, MI 1
|
DT&I Tests Radio
4.3 MB
|
French, NM 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
Harrisburg, PA 1
Hastings, NE 1
highway crossings 1
|
Is 20 Seconds Enough?
382.9 KB
|
Illinois Central 1
|
All-Relay Interlocking on IC
3.0 MB
|
interlocking 6
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
ICC Signaling Investigation
770.4 KB
|
|
More Difficult to Get a Call-On Signal
488.8 KB
|
|
Reverse Running on the Pennsylvania
2.8 MB
|
|
The User of Signaling
895.2 KB
|
|
War-Time Replacement of Interlocking on Pere Marquette
3.4 MB
|
Interstate Commerce Commission 3
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
ICC Signal Hearing
1.3 MB
|
|
ICC Signaling Investigation
770.4 KB
|
Kankakee, IL 1
|
All-Relay Interlocking on IC
3.0 MB
|
Kouts, IN 1
KX interlocking, Kankakee, IL 1
|
All-Relay Interlocking on IC
3.0 MB
|
Lebanon Jct., KY 1
Lewisville, AR 1
Limon, CO 2
Louisville & Nashville 1
manual block signaling 1
|
ICC Signaling Investigation
770.4 KB
|
McCook, NE 1
McFarland, KS 1
Michigan Central 1
Missouri Pacific 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
Moffat Tunnel 1
Naperville, IL 1
New York Central 3
New York, New Haven & Hartford 1
|
W. M. Post retires
932.3 KB
|
New York, NY 1
Northern Pacific 1
Ohm's law 1
|
Ohm's Law Chart
410.4 KB
|
Omaha, NE 2
Orestod, CO 1
Pennsylvania 4
|
Carryphone on the Pennsylvania
1.5 MB
|
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
Reverse Running on the Pennsylvania
2.8 MB
|
|
W. M. Post retires
932.3 KB
|
Pere Marquette 3
personal 2
|
G. H Dryden retires
455.7 KB
|
|
W. M. Post retires
932.3 KB
|
phantom indications 1
|
The User of Signaling
895.2 KB
|
Philadelphia, PA 1
Phillipsburg, NJ 1
Pine Bluff, AR 1
Pittsburgh, PA 1
Porter, IN 1
|
Pere Marquette Installs CTC
3.1 MB
|
Post, W. M. 1
|
W. M. Post retires
932.3 KB
|
Prosser, WA 1
radio 1
Redlands, CA 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
Sandusky, OH 1
signal failures 1
|
Improved Signal Performance
446.8 KB
|
Sinks, KY 1
Southern 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
Southern Pacific 2
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
More Difficult to Get a Call-On Signal
488.8 KB
|
speed limits 3
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
ICC Signal Hearing
1.3 MB
|
|
ICC Signaling Investigation
770.4 KB
|
spring switches 1
St. Joseph, MI 1
|
Pere Marquette Installs CTC
3.1 MB
|
St. Louis Southwestern 1
Sterrett, AL 1
Tiskilwa, IL 1
train control 3
|
ICC 50-MPH Signal Hearing
6.9 MB
|
|
ICC Signal Hearing
1.3 MB
|
|
ICC Signaling Investigation
770.4 KB
|
train order signals 1
|
The User of Signaling
895.2 KB
|
train orders 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
Trenton, NJ 1
Union Switch & Signal 3
Wabash 3
|
ICC Signaling Investigation
770.4 KB
|
|
Too Many Yellows
1.2 MB
|
|
War-Time Replacement of Interlocking on Pere Marquette
3.4 MB
|
Washington, DC 1
Wells, NV 1
|
ICC 50-MPH Signal Hearing
6.9 MB
|
West Jersey & Seashore 1
|
W. M. Post retires
932.3 KB
|