Rules and Instructions for the Maintenance of the Way and Structures, Effective September 1, 1916.
Baltimore & Ohio Railroad Booklet Safety Rules For Maintenance Workers 1952 B&O
ASSOCIATION OF AMERICAN RAILROADS - SAFETY RULES FOR MAINTENANCE OF EQUIP.-1942
1942 NEW YORK CENTRAL SYSTEM RAILROAD RULES FOR THE GOVERNMENT OF MAINTENANCE
Missouri Pacific Rules And Regulations for Maintenance of Way and Structure 1951
ROCK ISLAND RR - RULES & REGULATIONS FOR MAINTENANCE OF WAY & STRUCTURES-6/2/68
1951 Rock Island RR Rules & Regulations for Maintenance of Way & Structures
