Mainline U.S.A.Documentary54 Play Trailer Play Trailer Mainline U.S.A.54Documentarythumb_upthumb_downMainline U.S.A.January 1, 1957Directed byCarl DudleyA documentary on the railroads of America produced by the Association of American RailroadsUS content warning trainrailroad Last Updated: 18 days ago Request Update CastArt GilmoreNarratorTrailerMainline USA (1957)