United States. Interstate Commerce Commission. (1939). Comparative Statement of Railway Operating Statistics, Steam Railways in the United States Having Annual Operating Revenues Over $5,000,000, Years 1938, 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 1938, 1937, and 1936. [Washington]: [s.n.], 1939.
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 1938, 1937, and 1936. [s.n.], 1939.
Warning: These citations may not always be 100% accurate.