Roy Rogers as Roy Rogers

Carol Hughes as Eleanor Fairbanks

Guy Usher as John Fairbanks

Smiley Burnette as Frog

Stephen Chase as Tom Andrews

Earl Dwire as Mayor Biggs

Tom Chatterton as Congressman Edward H. Marlowe

Al Rice as Member of Maple City Four

Fritz Meissner as Member of Maple City Four

Pat Patterson as Member of Maple City Four

Art Janes as Member of Maple City Four

Kenneth Harlan as Mr. Richards

Jack Rockwell as Sheriff

Jack Ingram as Dam Guard Captain

Dick Elliott as Sen. William P. Scully

Dora Clement as Mrs. Marlowe

Brandon Beach as Senator Wilson

Jean Fowler as Mrs. Wilson

Fred Burns as Rankin, leader of mob to blow up dam

Slim Whitaker as Tremaine, Rankin's partner

Earle Hodgins as Radio Announcer

Merrill McCormick as Peddler in Old Truck with Bell

Jack Kirk as Water Wagon Driver

Frankie Marvin as Deputy Pete

Burr Caruth as Larkin