United States. Interstate Commerce Commission. (1938). Comparative Statement of Railway Operating Statistics, Steam Railways in the United States Having Annual Operating Revenues Over $5,000,000, Years 1937 and 1936. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Interstate Commerce Commission. Comparative Statement of Railway Operating Statistics, Steam Railways in the United States Having Annual Operating Revenues Over $5,000,000, Years 1937 and 1936. [Washington]: [s.n.], 1938.
MLA (9th ed.) CitationUnited States. Interstate Commerce Commission. Comparative Statement of Railway Operating Statistics, Steam Railways in the United States Having Annual Operating Revenues Over $5,000,000, Years 1937 and 1936. [s.n.], 1938.
Warning: These citations may not always be 100% accurate.