Here is a cool old railroad worker's safety film released by Union Pacific in 1972, probably made in 1968 or so from the looks of the cars.. It kind of reminds me of those horribly boring films we were required to watch in junior high school, with a funky, "jazzy" 1960 sound track and awful, outdated fashions and hair styles. You'll love the hair styles on the girls--major hair spray, and very bouffant. The way the railroad workers are dressed is almost EXACTLY the way they dressed in 1970 when I first started catching out, and many tramps imitated this style (overalls, steel-toed work boots, etc.) in an effort to blend in culturally with the car knockers and switchmen. The idea was if you dressed like they did, they were less likely to rat you out.