Dan Blocker (Charley) and Jack Elam (Kittrick) appeared on Bonanza (1959).
Byron Foulger's last feature film, released just after his death from a heart condition.
Mickey Rooney and Jim Backus also starred together in It's a Mad Mad Mad Mad World (1963) and Pete's Dragon (1977).
Twenty years before Cockeyed Cowboys, Jack Elam had an uncredited role as Man at Bar in the Mickey Rooney film Quicksand (1950).