Brian Keith as McElroy

Robert Culp as Wild Bill Hickock

Judi Meredith as Calamity Jane

Jim McMullan as Buffalo Bill

Alfred Ryder as Captain Benton

Simon Oakland as Sgt. Austin Tremaine

Ben Cooper as Tom King

Trevor Bardette as 'Uncle Otto' Strassner

Harry Carey, Jr. as Jellicoe

Richard H. Cutting as Jack Goodnight

Addison Richards as Huntingdon Lawford

Cliff Osmond as Private Jean Duchamps

Paul Birch as Paul King

Richard Deacon as Commissioner Mailer

Michael Burns as Jimmy McElroy

Rodolfo Acosta as Cherokee Policeman