Railroads. Freight and passenger service operating statistics of class 1 steam railways in United States, compiled from 152 reports of freight service statistics representing 172 railways and from 147 reports of passenger service statistics representing 167 railways (switching and terminal companies not included), May, 1927 and 1926 [and 5 months ended with May, 1927 and 1926; prepared in] Bureau of Statistics.

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