Warner Bros. bought the engine in 1939, and it was featured in many films, such as Torrid Zone, Cheyenne Autumn, and The Great Train Robbery.
Judging by the results, those sources would seem to have been such Hollywood fictional films as Cheyenne Autumn and A Man Called Horse.
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Although the movie was not a commercial success and Stewart and Ford did not make the best collaborative team, they would work together three more times, two of those in films that took a radically different and even darker view of the western myth: The Man Who Shot Liberty Valance (1962) and Cheyenne Autumn (1964).