Factual errors: The locomotives that pull the trains are completely wrong for the time and place the movie is set. They are class K-28s, which have a very distinct and recognizable appearance. They were not produced until 1923, and were used exclusively by the Denver and Rio Grande Western Railroad on their narrow gauge track in Colorado and New Mexico. (SOURCE: Model Railroader Cyclopedia Volume 1: Steam Locomotives, p. 81.)
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