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.
Aberdeen, SD 1
approach lighting 1
Obituary: Frank P. Patenall
627.0 KB
|
Arcadia, OH 1
Atchison, Topeka & Santa Fe 6
Atlanta, GA 1
Atlantic Coast Line 2
Aurora, IL 1
automatic block signaling 1
automatic train control 1
Baltimore & Ohio 2
|
Obituary: Frank P. Patenall
627.0 KB
|
|
Personal Mention: G. H. Dryden
432.7 KB
|
Baltimore, MD 1
Berwick, OH 1
Boston & Maine 2
Boston, MA 1
Bridgeport, MI 1
cab signaling 1
Central of Georgia 1
Central of New Jersey 2
centralized traffic control 1
Charlottesville, VA 1
Chesapeake & Ohio 3
Chicago & Eastern Illinois 4
Chicago & North Western 7
Chicago Great Western 1
Chicago Junction 1
Chicago South Shore & South Bend 2
Chicago, Burlington & Quincy 4
Chicago, IL 2
Chicago, Indianapolis & Louisville 2
Chicago, Milwaukee & St. Paul 1
Chicago, Milwaukee, St. Paul & Pacific 2
Chicago, Rock Island & Pacific 4
Clifton Forge, VA 1
color position light signals 1
|
Obituary: Frank P. Patenall
627.0 KB
|
Cone, L. 1
|
Changes on the C&NW
978.4 KB
|
Conneaut, OH 1
Delaware & Hudson 1
|
Circuit Polarity at Relay Contacts
526.2 KB
|
Delaware, Lackawanna & Western 2
Delmar, IA 1
Denver, CO 1
Dryden, G. H. 1
|
Personal Mention: G. H. Dryden
432.7 KB
|
Dunfee, IN 1
|
Early APB Signaling
408.5 KB
|
early signaling 1
|
Signaling Half a Century Ago
1.1 MB
|
economics 2
Erie 1
Fostoria, OH 1
Galesburg, IL 1
Gary, IN 1
General Railway Signal 3
|
Changes on the C&NW
978.4 KB
|
|
Circuit Polarity at Relay Contacts
526.2 KB
|
|
Train Order Indicators Used Successfully on the CI&L
604.3 KB
|
Gibson, IN 1
Gordonsville, VA 1
Great Northern 4
|
Arrangement of Color Light Units
816.2 KB
|
|
Emergency Release Circuits
2.4 MB
|
|
GN Replaces Semaphores with Color Light Signals
1.2 MB
|
|
Why Markers for Automatic Signals?
494.6 KB
|
Harrisburg, PA 1
highway crossings 2
Hocking Valley 1
Illinois Central 8
Indiana Harbor Belt 1
Interborough Rapid Transit 2
|
Emergency Release Circuits
2.4 MB
|
|
More Comments on Latch Locking
643.4 KB
|
interlocking 4
Interstate Commerce Commission 1
Kansas City, MO 1
Lindsay, VA 1
Loree, L. F. 1
|
Obituary: Frank P. Patenall
627.0 KB
|
Los Angeles, CA 1
Louisville & Nashville 3
Michigan City, IN 1
Minneapolis & St. Louis 1
Minneapolis, MN 1
Missouri Pacific 2
Missouri-Kansas-Texas 4
|
Cost of a Train Stop
944.9 KB
|
|
Signal and Train Control Hearing Ends
2.0 MB
|
|
What Is the Cost of a Train Stop?
463.2 KB
|
|
Why Markers for Automatic Signals?
494.6 KB
|
Mobile & Ohio 1
Monon 1
Mount Morris, MI 1
Nashville, Chattanooga & St. Louis 4
Nashville, TN 1
New York Central 9
New York Rapid Transit 1
|
Are Call-On Signals Safe?
545.6 KB
|
New York, Chicago & St. Louis 3
|
Arrangement of Color Light Units
816.2 KB
|
|
Early APB Signaling
408.5 KB
|
|
Nickel Plate Installs 169 Miles of Color Light Automatics
3.6 MB
|
New York, New Haven & Hartford 1
Noble, S. E. 1
|
Changes on the C&NW
978.4 KB
|
Norfolk & Western 2
Northern Pacific 4
obituary 1
|
Obituary: Frank P. Patenall
627.0 KB
|
Orange, VA 1
Pacific Electric 1
Patenall, F. P. 2
|
Obituary: Frank P. Patenall
627.0 KB
|
|
Personal Mention: G. H. Dryden
432.7 KB
|
Pennsylvania 3
Pere Marquette 2
personal 3
|
Changes on the C&NW
978.4 KB
|
|
Obituary: Frank P. Patenall
627.0 KB
|
|
Personal Mention: G. H. Dryden
432.7 KB
|
Phinney, R. M. 1
|
Changes on the C&NW
978.4 KB
|
purchasing 1
|
Getting What You Specify
866.4 KB
|
Quincy, IL 1
Reading 2
Redfield, SD 1
relays 1
|
Circuit Polarity at Relay Contacts
526.2 KB
|
Richmond, Fredericksburg & Potomac 1
Root Street, Chicago, IL 1
Seaboard Air Line 3
Signal Accessories Corporation 1
|
Saco Lever Circuit Controller
735.1 KB
|
signaling 1
|
Why Markers for Automatic Signals?
494.6 KB
|
South Whitley, IN 1
|
Early APB Signaling
408.5 KB
|
Southern 4
Southern Pacific 2
St. Louis Southwestern 1
St. Louis, MO 1
St. Louis-San Francisco 3
|
Reporting False Clear Indications
648.8 KB
|
|
Signal and Train Control Hearing Ends
2.0 MB
|
|
Why Markers for Automatic Signals?
494.6 KB
|
St. Paul, MN 2
Standard Code 1
|
Train Signs or Indicators
468.2 KB
|
Stanley, OH 2
Starck, P. A. 1
|
Changes on the C&NW
978.4 KB
|
Staunton, VA 1
Sullivan, IN 1
Texas & Pacific 3
Toledo Terminal 1
Tomkins, O. S. 1
|
Changes on the C&NW
978.4 KB
|
train control 1
train order signals 1
Union Pacific 2
Union Switch & Signal 5
upper quadrant semaphore 1
|
Obituary: Frank P. Patenall
627.0 KB
|