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The Committee on Railway Signals, appointed at the Sixth Annual Convention of the American Society of Civil Engineers, report as follows: Circulars, dated September 15th, 1874, were issued to the railway companies of the United States asking for information as to the systems of signals in use upon their several roads; these have generally been responded to, and the Committee is thus placed in possession of the knowledge necessary to a comprehensive view of that department of railway service in America.
The Committee on Railway Signals, appointed at the Sixth Annual Convention of the American Society of Civil Engineers, report as follows: Circulars, dated September 15th, 1874, were issued to the railway companies of the United States asking for information as to the systems of signals in use upon their several roads; these have generally been responded to, and the Committee is thus placed in possession of the knowledge necessary to a comprehensive view of that department of railway service in America.
Railway Signals
Steele, J. Dutton (author)
Transactions of the American Society of Civil Engineers ; 4 ; 147-184
2021-01-01
381875-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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