"Two million Americans have as their principal form of visual entertainment nomad movies, run by some 3000 road-showmen who present their motion pictures in tents, auditoriums or churches. Few city folks realize that this is the way in which entertainment is brought to about 5000 U.S. towns of less than 1000 population... Road-showmen say that the favorite shows are fast-action westerns and occasional comedies. Mushy love scenes are box-office poison among their clientele. During harvest seasons, when customers can best afford the ten to twenty-five cents admission charge, these showmen take in between $75.00 and $150.00 a week."
These were not the only traveling entertainers during the Thirties: the Federal Theater Project also sent hoards of players throughout the nation to amuse and beguile - you can read about that here