Since the late 18th century, merchant seamen and dockworkers have worn denim flared trousers, striped undershirts, knitted roll neck jumpers, and short blue peacoats [REF].
In the Old West era, Union Pacific train engineers and railroad workers wore distinctive overalls, caps and work jackets made from hickory stripe[REF] before boiler suits were invented in the early 20th century [REF].