31. Railroad employees. Statistical analysis of carriers' monthly hours of service reports covering all railroads which reported, year ending June 30, 1924, instances in which employees were on duty for periods other than those provided by Federal hours of service act, with comparative summary covering fiscal years 1920-24. Bookmark Corporate/Agency Authors: Interstate Commerce Commission Publisher: Interstate Commerce Commission Date: Nov. 1924 SuDoc number: IC 1 hou.9:924