The Great K & A Train Robbery (1926)
Cullen has hired Tom to try and stop the robberies on his railroad. Knowing Cullen's secretary Holt is tipping off the gang, Tom works undercover by posing as a highwayman. To help him bring in the gang he enlists the help of the hobo DeLuxe Harry.
Directed by: Lewis Seiler
Starring: Tom Mix, Tony the Horse, Dorothy Dwan, Will Walling, Harry Gripp, Carl Miller
Links: IMDb, Movie posters, Movie stills