Train communications installed on two adjacent engine districts of 245 route-mi of 4-track railroad between Harrisburg, Pa, and Pittsburgh; description of communication system. (See also Ry Age v 123 n 13 Sept 27 1947 p 516-20)
Train communication on Pennsylvania
Ry Signaling
Railway Signaling ; 40 , n 10
1947
5 pages
Article (Journal)
English
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