The Great Train Rubbery

Droopy is the mail clerk on a train out West, and receives a package to deliver to a bank. Slick Wolf hears this, and he proceeds to try and steal it, figuring that it must be money. After a number of attempts, he succeeds, but is arrested by the sheriff. The package contains not cash, but "Wanted" posters for Slick Wolf. Droopy receives the reward for his capture.