Sergeant Preston of the Yukon Author:Radio Spirits Sgt. Preston and his wonder dog Yukon King meet "The Challenge of the Yukon" in 18 action-packed adventures. The Audition show for the series 12-23-42 The Wolf Cub 06-14-47 Grizzly 06-21-47 Pet Bear 06-28-47 The Puppy 07-05-47 Sam's Gold 07-12-47 The Man in the Fur Cap 07-19-47 A Dog Named Mabel 07-26-47 Derelict Dog 08-09-47 Messenger ... more »of Mercy 08-02-47 Revenge of Steve Carlton 08-23-47 Clue to a Killer 08-30-47 The Proof 10-02-47 Malamute Pup 10-09-47 The Last Cabin 10-16-47 Rex 10-23-47 Tara 11-29-47 The Marked Cards 12-06-47« less