BSTJ 1: 1. July 1922: Philadelphia-Pittsburgh Section of the New York-Chicago Cable. (Pilliod, James J.) (1922)
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Fig. 10—Cable Line on Steep Slopes NEW YORK-CHICAGO CABLE 71 flat cars adapted for our purpose. Fig. 12 shows two 5-ton tractorsin action on top of one of the mountains. As many sections of thecountry are very rough and highways several miles distant it seemedthat no other method of transporting… … Fig. 11—Narrow-Gage Mountain Railroad and Flat Car
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