Arizona Bound on AllMovie

This, the first of eight Rough Riders films, features Buck Jones, Tim McCoy, and Raymond Hatton as a trio of Texas Rangers who are called upon to save a stagecoach line from crooks operating in Mesa City. The screenplay, penned by Adele Buffington (who wrote the entire Rough Riders series under the pseudonym Jess Bowers) disguises the fact that the Riders are functioning as a team until the film's climax.