Ride Lonesome (1959)
A bounty hunter Randolph Scott escorts a killer James Best to be tried for murder, but allows the mans outlaw brother Lee Van Cleef to catch up with them to have a showdown over a previous shocking murder
Cyborg 2087 (1966)
Earths civilization of the future sends a cyborg back to the 1960s to change the future
Westbound (1958)
In 1864 Capt John Hayes goes to Colorado to take over the stagecoach line and keep the flow of Western gold flowing and help the North win the Civil War