This reminds me of my teenage years. Photographer Mike Brodie Captures Freight Train Hitchhikers | Train across america, Photo, Documentary photographers
The Underground World of Real Life Vagabonds — Vagabondish
Don't Call Them Bums: The Unsung History of America's Hard-Working Hoboes | Collectors Weekly
Train hopping - Hitchwiki: the Hitchhiker's guide to Hitchhiking
The Hobos of Instagram
Riding the Rails during the Great Depression
Gritty Snapshots Document the Wandering Lifestyle of Train Hoppers 50,000 Miles Across the US
Hobo Slang and The Anatomy of Trains and Rail Yards : vagabond
Unpacking Hobo Codes: The Pictographic Language of Train-Hopping Nomads - 99% Invisible