Monogram Pictures launched its lucrative "Rough Riders" western series with 1941's Arizona Bound. Producer Scott Dunlap hoped to attract new customers by teaming two of the most popular cowboy stars in the movies, Buck Jones and Tim McCoy, throwing in another old favorite, Raymond Hatton, as grizzled comedy relief (ironically, Hatton was actually younger than his two costars!) The first entry set the pattern of all the "Rough Riders" entries to follow: Apparently retired, gunslinger Buck Roberts (Buck Jones) is galvanized into action when an old friend asks him to help rid Mesa City of a scurrilous outlaw gang. Upon his arrival, Buck makes the acquaintance of local parson Tim McCall (McCoy) and itinerant ranchhand Sandy Hopkins (Hatton). It soon becomes obvious that Buck, Tim and Sandy have been working together all along, with Roberts doing most of the shootin' and fightin' while Tim and Sandy operate undercover and undetected. Their job finally done, our three heroes bid farewell to one another and go their separate ways, with the promise that they'll join up again whenever its becomes necessary. Though it seldom deviated from this basic formula, the "Rough Riders" series was a hit, and remained so until Buck Jones' untimely death in 1942.