This film was based on a book written by Emmett Dalton, the youngest of the three Daltons. He had passed away by the time this film was made. He is portrayed in the film by Frank Albertson.
The movie is full of actors from then The Three Stooges. One of the jurors and two of the lawmen riding the train were all in several of The Three Stooges' shorts from the same era.
Edgar Buchanan is one of the driest funniest actors ever produced by Hollywood. Ha opens the film with his dulcet humorous lines only to close the film in the same vein. Both pieces are filmed in exactly the same place and he is undertaking exactly the same task in both. And yet he is uncredited. He is brilliant.
Mrs. Emmett Dalton was engaged as a consultant on the film, according to a March 1940 Hollywood Reporter item.
Another news item in Hollywood Reporter adds that Randolph Scott replaced Walter Pidgeon in the role of Tod Jackson after Pidgeon became ill.