Original cast members Berton Churchill (President Arthur) was replaced by Emmett Corrigan and David Landau (Hook) was replaced by Lee Kohlmar. John Marston (Gelsey) was not seen in the film.
The character of Yates Martin is based on Colorado's "Silver King", Horace A.W. Tabor, who was a United States Senator for one month and built Denver's opera house, which still bears his name. Lily Owen's character is based on Elizabeth "Baby" Doe.