"Lux Radio Theater" broadcast a 60 minute radio adaptation of the movie onMay 31, 1937 with Jean Arthur reprising her film role.
John Wayne very much wanted the role of Wild Bill Hickok, which he felt certain would make him a star, but director Cecil B. DeMille wanted Gary Cooper instead.
Anthony Quinn told Cecil B. DeMille that he spoke fluent Cheyenne. Quinn's description of the Custer battle is gibberish, but DeMille was impressed.
2,000 Indian actors were used as extras for the Custer massacre sequence.
An excellent horseman from his youth in Montana, Gary Cooper did most of his own riding stunts, including the shot where he rode "hanging" between two horses.
Film debut of Hank Worden.
One of over 700 Paramount productions, filmed between 1929 and 1949, which were sold to MCA/Universal in 1958 for television distribution, and have been owned and controlled by Universal ever since.
Paramount executives wanted Wild Bill Hickok to survive the card-game shootout, but Cecil B. DeMille resisted and got his way.
The cavalry sequences were shot with members of the Wyoming National Guard. Two guardsmen were badly hurt during filming of a charge scene.
The script originally had Anthony Quinn's character entering the campsite with no concern because he thought it was the camp of another Indian. Quinn told Cecil B. DeMille that a real Indian would know the difference between a white man's camp and that of another Indian's, and should show caution when entering. When Quinn insisted, DeMille thought about it and agreed that's how the character ought to react.