Railroads. Freight and passenger service operating statistics of class 1 steam railways in United States, compiled from 143 reports of freight service statistics representing 153 railways and from 139 reports of passenger service statistics representing 149 railways (switching and terminal companies not included), Mar. 1932 and 1931 [and 3 months ended with Mar. 1932 and 1931; prepared in] Bureau of Statistics.

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