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.
accident 2
Rule 55 and the Gretna Accident
1.8 MB
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The Gretna Disaster
252.1 KB
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Adelaide, South Australia 1
aspects and indications 1
Aulon, TN 1
automatic block signaling 3
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Duluth Terminal Trestle Signaling
2.3 MB
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Extension of New Haven signals
684.8 KB
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Victoria Jubilee Bridge Protection
570.0 KB
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Baltimore & Ohio 2
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Emergency Suburban Traffic
252.9 KB
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Jersey City Terminal Interlocking
1.1 MB
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Belt Railway of Chicago 1
block signaling 1
Bryn Mawr, PA 1
Cairo, IL 1
Canadian Northern 1
Canadian Pacific 1
Cedar Hill, CT 1
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Extension of New Haven signals
684.8 KB
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Central of New Jersey 1
Central Vermont 1
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Victoria Jubilee Bridge Protection
570.0 KB
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Chicago & Alton 1
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Emergency Suburban Traffic
252.9 KB
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Chicago & North Western 2
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Compensation of Pipe Lines
319.6 KB
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Emergency Suburban Traffic
252.9 KB
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Chicago & Western Indiana 1
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Emergency Suburban Traffic
252.9 KB
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Chicago, Burlington & Quincy 1
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Emergency Suburban Traffic
252.9 KB
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Chicago, IL 2
Chicago, Milwaukee & St. Paul 1
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Emergency Suburban Traffic
252.9 KB
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Chicago, Rock Island & Pacific 1
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Emergency Suburban Traffic
252.9 KB
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Churchill, William 1
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Red as a Danger Indication
283.5 KB
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classification yard 1
Clearing, IL 1
color light signals 1
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Red as a Danger Indication
283.5 KB
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Communipaw, NJ 1
compensators 1
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Compensation of Pipe Lines
319.6 KB
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controlled manual block 1
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Extension of New Haven signals
684.8 KB
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Corning Glass Works 2
Cos Cob, CT 1
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Extension of New Haven signals
684.8 KB
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Davis, IL 1
Delaware & Hudson 1
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Victoria Jubilee Bridge Protection
570.0 KB
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Detroit United 1
Duluth, MN 1
electric interlocking 9
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Electric Interlocking at Aulon, Tennessee
882.6 KB
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Electric Interlocking at Davis, Illinois
241.3 KB
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Electric Interlockings in Australia
3.9 MB
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Extension of New Haven signals
684.8 KB
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First Position Light Signal Installation
580.6 KB
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New Interlockers on the Flint Belt Line
2.2 MB
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North Philadelphia Interlocking
828.9 KB
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Putting a GRS Interlocking Plant in Service
301.9 KB
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Victoria Jubilee Bridge Protection
570.0 KB
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electric train staff 1
electrification 2
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Extension of New Haven signals
684.8 KB
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First Position Light Signal Installation
580.6 KB
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electro-mechanical interlocking 3
electro-pneumatic interlocking 3
Federal Signal 2
Flint Belt 1
Flint, MI 1
General Railway Signal 6
Grand Trunk 2
Great Northern 1
Green's Farm, NY 1
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Extension of New Haven signals
684.8 KB
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Greenwich, CT 1
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Extension of New Haven signals
684.8 KB
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Gretna, Scotland 2
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Rule 55 and the Gretna Accident
1.8 MB
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The Gretna Disaster
252.1 KB
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half-interlocking 1
highway crossings 1
Hull, Québec 1
Illinois Central 2
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Electric Interlocking at Aulon, Tennessee
882.6 KB
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Emergency Suburban Traffic
252.9 KB
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index 1
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1915 index
6.6 MB
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Intercolonial 1
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Victoria Jubilee Bridge Protection
570.0 KB
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interlocking 15
Jersey City, NJ 1
Lehigh Valley 1
Louisville & Nashville 1
lunar white 1
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Red as a Danger Indication
283.5 KB
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Mamaroneck, NY 1
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Extension of New Haven signals
684.8 KB
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Manawaki Jct., Ontario 1
McAdam Jct., New Brunswick 1
mechanical interlocking 5
mechanical leadout 1
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Compensation of Pipe Lines
319.6 KB
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Memphis, TN 1
Mobile & Ohio 1
Montreal, Quebec 1
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Victoria Jubilee Bridge Protection
570.0 KB
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movable bridge 1
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Victoria Jubilee Bridge Protection
570.0 KB
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Nashville, Chattanooga & St. Louis 1
New Haven, CT 1
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Extension of New Haven signals
684.8 KB
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New York, New Haven & Hartford 1
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Extension of New Haven signals
684.8 KB
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New York, NY 1
Newark, NJ 1
Norfolk & Western 1
North Philadelphia, PA 1
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North Philadelphia Interlocking
828.9 KB
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operation of switches 1
Ottawa, Ontario 1
Overbrook, PA 2
Paoli, PA 1
Pennsylvania 5
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Beam-Light Signals on the Pennsylvania
318.8 KB
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Emergency Suburban Traffic
252.9 KB
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First Position Light Signal Installation
580.6 KB
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North Philadelphia Interlocking
828.9 KB
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Trenton Electro-Mechanical Interlocking
1.7 MB
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Pere Marquette 1
Philadelphia & Reading 1
Philadelphia, PA 3
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Beam-Light Signals on the Pennsylvania
318.8 KB
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First Position Light Signal Installation
580.6 KB
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North Philadelphia Interlocking
828.9 KB
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Point St. Charles, Quebec 1
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Victoria Jubilee Bridge Protection
570.0 KB
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position light signals 2
Post, W. M. 1
power signaling 1
Quebec, Montreal & Southern 1
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Victoria Jubilee Bridge Protection
570.0 KB
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Quintinshill, Scotland 2
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Rule 55 and the Gretna Accident
1.8 MB
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The Gretna Disaster
252.1 KB
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red for danger 1
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Red as a Danger Indication
283.5 KB
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Rudd, A. H. 3
Rye, NY 1
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Extension of New Haven signals
684.8 KB
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San Francisco, CA 1
Saxby & Farmer 1
Scotland 1
semaphore signals 5
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British and American Railroad Signaling
3.6 MB
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Extension of New Haven signals
684.8 KB
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First Position Light Signal Installation
580.6 KB
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Red as a Danger Indication
283.5 KB
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Victoria Jubilee Bridge Protection
570.0 KB
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signal colors 1
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Red as a Danger Indication
283.5 KB
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signal glass 2
signals 1
South Australia 1
Southern Pacific 1
Springfield, MA 1
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Extension of New Haven signals
684.8 KB
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St. Lambert, Quebec 1
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Victoria Jubilee Bridge Protection
570.0 KB
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Stamford, CT 1
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Extension of New Haven signals
684.8 KB
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Stecher, C. G. 1
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Compensation of Pipe Lines
319.6 KB
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Superior, WI 1
switch and lock movement 1
track circuits 1
train starting system 1
transit strike 1
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Emergency Suburban Traffic
252.9 KB
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Trenton, NJ 1
Union 1
Union Switch & Signal 5
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Electro-Pneumatic Plant at San Francisco
2.4 MB
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First Position Light Signal Installation
580.6 KB
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Jersey City Terminal Interlocking
1.1 MB
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North Philadelphia Interlocking
828.9 KB
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Victoria Jubilee Bridge Protection
570.0 KB
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United Kingdom 2
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Rule 55 and the Gretna Accident
1.8 MB
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The Gretna Disaster
252.1 KB
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Vanceboro, ME 1
Wayne, PA 1
West Philadelphia, PA 1
Westport, CT 1
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Extension of New Haven signals
684.8 KB
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Winnipeg Electric 1
Winnipeg, Manitoba 1
Woodlawn, NY 1
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Extension of New Haven signals
684.8 KB
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