This Ian Tyson song mentions Colorado in its first verse. I saw Judy Collins perform at the University of Arizona back in 1968; I don't remember whether she sang this song then or not, but I've always loved it. I've always thought she and Joan Baez had the purest voices of any of the Sixties-Seventies folk musicians. This version has Stephen Stills accompanying her; Graham Nash is the MC.
There's a young man that I know whose age is twenty-one
Comes from down in southern Colorado
Just out of the service, he's lookin' for his fun
Someday soon, goin' with him someday soon