Railroads. Freight and passenger service operating statistics of class 1 steam railways in United States, compiled from 148 reports of freight service statistics representing 157 railways and firm 145 reports of passenger service statistics representing 154 railways (switching and ternvnal companies not included), Aug. 1931 and 1930 [and 8 months ended with Aug. 1931 and 1930; prepared in] Bureau of Statistics.

Tools