The full names for Wishbone and Mushy are George Washington Wishbone and Harkness Mushgrove III.
Although Eric Fleming was the show's star, recently issued DVD packages prominently feature Clint Eastwood due to his later fame.
Clint Eastwood was 28 when the series began, although his character was supposed to be 19.
The actor who played trailboss, Gil Favor, drowned in South America while filming a movie. He was only 40.
The Mexican helper is named Hey Soos, the actual spelling of his name is Jesus, which in Spanish is pronounced Hey Soos. There would be letters of outrage when the character is named Jesus.