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.
1951 1
1951 index
4.8 MB
|
"S" markers 2
"TRAIN" indicators 1
|
Approach Train Indicators
402.6 KB
|
's Hertogenbosch 1
|
New Interlocking in Holland
1.0 MB
|
Alexandria, VA 1
all-relay interlocking 6
Alliance, NE 2
Amqui, TN 1
aspects and indications 4
|
New Interlocking in Holland
1.0 MB
|
|
P&LE Rebuilds Interlocking
957.2 KB
|
|
Signal Modernization Program on the RF&P
1.0 MB
|
|
Single-Track With CTC Handles 40 Trains Daily
530.8 KB
|
Atchison, Topeka & Santa Fe 2
|
Approach Train Indicators
402.6 KB
|
|
More Signal Construction in 1950
1.0 MB
|
Atlantic Coast Line 1
Attica, NY 1
Auburn, IA 1
|
Automatic Block for Few Fast Trains
286.5 KB
|
Aurora, IL 1
automatic block signaling 9
automatic interlocking 1
automatic train control 2
|
More Signal Construction in 1950
1.0 MB
|
|
Pennsylvania Exhibits Speed Control
512.5 KB
|
automatic train stop 1
Baltimore & Ohio 12
Bluefield, WV 1
Bluestone, WV 1
Bombay, Baroda & Central India 1
Bombay, India 1
Boston & Maine 4
Browns, IA 1
Buffalo, NH 1
Buffalo, NY 3
cab signaling 3
|
Cab signal system
455.8 KB
|
|
More Signal Construction in 1950
1.0 MB
|
|
Pennsylvania Exhibits Speed Control
512.5 KB
|
call-on signals 2
|
Modern Interlocking on the Norfolk & Western
710.2 KB
|
|
P&LE Rebuilds Interlocking
957.2 KB
|
Canadian National 1
Canadian Pacific 1
carrier control 2
Carroll, IA 1
Central of New Jersey 1
centralized traffic control 16
Chattanooga, TN 1
|
Double Track to Single With CTC
197.9 KB
|
Chesapeake & Ohio 2
Cheyenne, WY 1
Chicago & Eastern Illinois 1
Chicago & North Western 1
Chicago Great Western 1
Chicago South Shore & South Bend 1
Chicago, Burlington & Quincy 4
Chicago, IL 1
Chicago, Milwaukee, St. Paul & Pacific 3
Chicago, Rock Island & Pacific 2
|
Automatic Block for Few Fast Trains
286.5 KB
|
|
What's the Answer? Stop Signals in CTC
274.3 KB
|
Cincinnati, OH 1
|
B&O Installs Modern Interlocking
871.3 KB
|
coded track circuits 6
color light signaling 1
color light signals 1
color position light signals 3
Concord, MA 1
Concord, NH 1
|
Double Track to Single With CTC
197.9 KB
|
Connellsville, PA 1
Corning Glass Center 1
|
Glass Library and Museum
319.8 KB
|
Corning Glass Works 1
|
Glass Library and Museum
319.8 KB
|
Corning, NY 1
|
Glass Library and Museum
319.8 KB
|
Cortland, NY 1
crossing recorders 1
crossing watchmen 1
Dayton Union 1
Dayton, OH 1
Delaware, Lackawanna & Western 1
Delmar, IA 1
Den Bosch 1
|
New Interlocking in Holland
1.0 MB
|
desk lever interlocking 1
Dove, IA 1
dwarf signals 1
East Chicago, IN 1
East Newark Jct., NJ 1
|
Pennsylvania Exhibits Speed Control
512.5 KB
|
electric interlocking 2
electric switch locks 2
electrification 1
electro-pneumatic switches 1
Erie 3
false proceed failures 1
|
ICC Bureau of Safety Report
740.4 KB
|
false restrictive failures 1
|
ICC Bureau of Safety Report
740.4 KB
|
flashing light signals 1
Ft. Plain, NY 1
Gays, IL 1
General Railway Signal 16
Glass Library and Museum 1
|
Glass Library and Museum
319.8 KB
|
Grafton, WV 1
Grand Island, NE 1
Green Island, IA 2
Griswold Signal 1
Hagerstown, MD 1
Hammond, IN 1
hand-throw crossivers 1
Harrison, NJ 1
|
Pennsylvania Exhibits Speed Control
512.5 KB
|
Henderson, KY 1
high-speed turnouts 1
highway crossings 11
hold-out signal 1
hold-out signals 1
Illinois Central 2
index 1
|
1951 index
4.8 MB
|
Indianapolis, IN 1
interlocking 13
Interstate Commerce Commission 1
|
ICC Bureau of Safety Report
740.4 KB
|
Ivorydale Jct., OH 1
|
B&O Installs Modern Interlocking
871.3 KB
|
junction indicators 1
Kansas City Southern 2
Kansas City Terminal 1
Kansas City, MO 2
Karl, Mattoon, IL 1
Knoxville, TN 1
La Porte, IA 1
|
Automatic Block for Few Fast Trains
286.5 KB
|
Lost Nation, IA 1
Louisville & Nashville 1
Maine Central 1
Maine Public Utility Commission 1
Manchester, NH 1
Manly, IA 1
|
Automatic Block for Few Fast Trains
286.5 KB
|
Marion, IA 2
Markham, IL 1
Martelle, IA 1
Mattoon, IL 1
McKees Rocks, PA 1
|
P&LE Rebuilds Interlocking
957.2 KB
|
McKeesport, PA 1
|
P&LE Rebuilds Interlocking
957.2 KB
|
mechanical interlocking 4
Moberly, MO 1
Montreal, Quebec 1
motor car indicators 1
motor car protection 1
Moulton, IL 1
Mount Pleasant, IA 1
movable bridge 1
Mumbai, India 1
Nashua, NH 2
Netherlands 1
|
New Interlocking in Holland
1.0 MB
|
New Castle, PA 1
|
P&LE Rebuilds Interlocking
957.2 KB
|
New Delhi, India 1
New York Central 5
New York, Chicago & St. Louis 1
Newark, NJ 1
|
Pennsylvania Exhibits Speed Control
512.5 KB
|
Nickel Plate 1
Norfolk & Western 3
North Dayton, OH 1
North Platte, NE 1
Olin, IA 1
Omaha, NE 1
Oskaloosa, MO 1
Oxford Jct., IA 1
Pana, IL 1
Paralta, IA 1
Parkersburg, WV 1
Pennsylvania 7
Pittsburg, KS 1
Pittsburgh & Lake Erie 1
|
P&LE Rebuilds Interlocking
957.2 KB
|
Pittsburgh & West Virginia 1
Pittsburgh Jct., OH 1
Pittsburgh, PA 1
|
P&LE Rebuilds Interlocking
957.2 KB
|
plug-in relays 2
Portage, NY 2
|
Double Track to Single With CTC
197.9 KB
|
|
More Signal Construction in 1950
1.0 MB
|
Porter, L. B. 1
Portland Terminal 1
Portland, ME 1
Portland, OR 1
position light signals 1
|
P&LE Rebuilds Interlocking
957.2 KB
|
Potomac Yard, Alexandria, VA 1
power switch machines 1
power switches 2
Powhatan, WV 1
Prescott, WI 1
Pueblo, CO 1
Ravenna, NE 1
Richmond, Fredericksburg & Potomac 1
Richmond, VA 1
River Jct., NY 1
Roanoke, VA 1
rock slide detectors 1
Rook, PA 1
route interlocking 3
Rushville, IN 1
Saxby & Farmer 1
|
Pennsylvania Exhibits Speed Control
512.5 KB
|
Schwendt, B. J. 1
Seaboard Air Line 1
searchlight signals 5
semaphore signals 3
semi-automatic interlocking 1
signal construction 1
Somerville, MA 1
|
Glass Library and Museum
319.8 KB
|
Southern 3
|
Double Track to Single With CTC
197.9 KB
|
|
Modern Interlocking on the Norfolk & Western
710.2 KB
|
|
More Signal Construction in 1950
1.0 MB
|
speed selection 1
spring switches 5
Springfield, MO 1
St. Louis, MO 1
St. Louis-San Francisco 1
station overlaps 1
Ste. Rosalie, Quebec 1
stop indication 1
take-siding indicator 1
The Dalles, OR 1
Tower A, Omaha, NE 1
Tower Hill, IL 1
track circuits 1
traffic direction indication 1
|
Traffic Direction Indication
152.0 KB
|
train listener 1
tunnel fans 1
Union Pacific 3
Union Switch & Signal 13
Ustick, MO 1
Vincennes, IN 1
Vinton, IA 1
|
Automatic Block for Few Fast Trains
286.5 KB
|
Wabash 1
Washington, DC 1
wayside signaling 1
|
Pennsylvania Exhibits Speed Control
512.5 KB
|