United States. Interstate Commerce Commission. (1921). Collisions, derailments, and other accidents resulting in injury to persons, equipment, or roadbed, arising from operation of steam roads used in interstate commerce, Oct., Nov., and Dec. 1921 and year 1921. GPO.
Chicago Style (17th ed.) CitationUnited States. Interstate Commerce Commission. Collisions, Derailments, and Other Accidents Resulting in Injury to Persons, Equipment, or Roadbed, Arising from Operation of Steam Roads Used in Interstate Commerce, Oct., Nov., and Dec. 1921 and Year 1921. [Washington]: GPO, 1921.
MLA (9th ed.) CitationUnited States. Interstate Commerce Commission. Collisions, Derailments, and Other Accidents Resulting in Injury to Persons, Equipment, or Roadbed, Arising from Operation of Steam Roads Used in Interstate Commerce, Oct., Nov., and Dec. 1921 and Year 1921. GPO, 1921.