Morganna Roberts went on to fame in the early 70's as the notorious "Kissing Bandit" who plagued baseball diamonds around the country.
Dawn Diano - the brunette 'captive' - was a stripper of some repute in the 1960's, best known as "Miss Nude Galaxy."
Before turning to acting, Art Schill was a banjo and guitar player in a group called "The Folksters". In addition to his part as Mac Blackjack, he is credited with (some of) the music in the film.