After the Indian chief ran the train, Scott told the chief someday they will name a train after him. They did: the Santa Fe Super Chief.
The Santa Fe locomotive shown is #1, the C.K. Holliday. It's named after Cyrus K Holliday, the first President of the railroad.
As Randolph Scott is leaving his old friends in Dodge City a mountain can be seen over his shoulder down the street. There are no mountains like that in Dodge City, Kansas.
The locomotive most prominently seen in the film is Atchison, Topeka & Santa Fe Railroad #5, "Little Buttercup," an authentic engine from the AT&SF's historic collection. It was later displayed at the California State Railroad Museum in Sacramento, and is now on loan to the California Trolley and Railroad Corporation's museum in San Jose.
Stuntman Bob Morgan doubles for Randolph Scott for the fight on the train with stuntman Jock Mahoney playing a henchman.However Morgan expressed concern at falling from the train so Mahoney switched places with him and now doubled Scott while Morgan doubled Mahoney.The incident is particularly ironic as Morgan was seriously injured by falling from a train while filming 'How the West was Won' [1962] which ended his stunt career.