Railroads. Freight and passenger service operating statistics of class 1 steam railways in United States, compiled from 154 reports of freight-service statistics representing 165 railways and from 148 reports of passenger-service statistics representing 159 railways (switching and terminal companies not included), June, 1929 and 1928 [and 6 months ended with June, 1929 and 1928; prepared in] Bureau of Statistics.