Railroads. Freight and passenger service operating statistics of class 1 steam railways in United States, compiled from 155 reports of freight service statistics representing 166 railways and from 149 reports of passenger-service statistics representing 160 railways (switching and terminal companies not included), May, 1929 and 1928 [and 5 months ended with May, 1929 and 1928; prepared in] Bureau of Statistics.

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