| Challenge of the Yukon – King Takes Over (01-03-49) | 01-03-1949 | |
| Challenge of the Yukon – Jim Beldens Secret (01-07-49) | 01-07-1949 | |
| Challenge of the Yukon – King Proves His Worth (01-10-49) | 01-10-1949 | |
| Challenge of the Yukon – Lem Baileys Pet Bear (01-14-49) | 01-14-1949 | |
| Challenge of the Yukon – White Water (01-17-49) | 01-17-1949 | |
| Challenge of the Yukon – Jimmy’s Birthday Cake (01-19-49) | 01-19-1949 | |
| Challenge of the Yukon – Skagway Patrol (01-21-49) | 01-21-1949 | |
| Challenge of the Yukon – Mystery in the Cave (01-24-49) | 01-24-1949 | |
| Challenge of the Yukon – The Moose River Murder (01-26-49) | 01-26-1949 | |
| Challenge of the Yukon – Lost River Ambush (01-28-49) | 01-28-1949 | |
| Challenge of the Yukon – The Mongrel (01-31-49) | 01-31-1949 | |
| Challenge of the Yukon – On One Condition (02-02-49) | 02-02-1949 | |
| Challenge of the Yukon – The Trail of Grizzly Grayson (02-04-49) | 02-04-1949 | |
| Challenge of the Yukon – Rogue’s Progress (02-07-49) | 02-07-1949 | |
| Challenge of the Yukon – Sergeant Preston Faces Death (02-09-49) | 02-09-1949 | |
| Challenge of the Yukon – Ambush (02-11-49) | 02-11-1949 | |
| Challenge of the Yukon – The Coward (02-14-49) | 02-14-1949 | |
| Challenge of the Yukon – Double Cross Creek (02-16-49) | 02-16-1949 | |
| Challenge of the Yukon – The Dog with the Gold Tooth (02-18-49) | 02-18-1949 | |
| Challenge of the Yukon – The Magic Light (02-21-49) | 02-21-1949 | |
| Challenge of the Yukon – Signal in Green (02-23-49) | 02-23-1949 | |
| Challenge of the Yukon – Danger Signal (02-25-49) | 02-25-1949 | |
| Challenge of the Yukon – River Pirates (02-28-49) | 02-28-1949 | |
| Challenge of the Yukon – Ambush at Forty Mile (03-02-49) | 03-02-1949 | |
| Challenge of the Yukon – The Music Hall Murder (03-04-49) | 03-04-1949 | |
| Challenge of the Yukon – Trail Mates (03-07-49) | 03-07-1949 | |
| Challenge of the Yukon – Bulldog Charm (03-09-49) | 03-09-1949 | |
| Challenge of the Yukon – The Meal the Convicted (03-11-49) | 03-11-1949 | |
| Challenge of the Yukon – The White Huskie (03-14-49) | 03-14-1949 | |
| Challenge of the Yukon – The Kondike Queen (03-16-49) | 03-16-1949 | |
| Challenge of the Yukon – The Caribou Case (03-18-49) | 03-18-1949 | |
| Challenge of the Yukon – The Black and White Pup (03-21-49) | 03-21-1949 | |
| Challenge of the Yukon – The Devil Dog (03-23-49) | 03-23-1949 | |
| Challenge of the Yukon – Letters to a Killer (03-25-49) | 03-25-1949 | |
| Challenge of the Yukon – Conover’s Crime (03-28-49) | 03-28-1949 | |
| Challenge of the Yukon – Crumpled Handbill (03-30-49) | 03-30-1949 | |
| Challenge of the Yukon – The Killer (04-01-49) | 04-01-1949 | |
| Challenge of the Yukon – The Remittance Man (04-04-49) | 04-04-1949 | |
| Challenge of the Yukon – Dead Man’s Man (04-06-49) | 04-06-1949 | |
| Challenge of the Yukon – The Knife Throwers (04-08-49) | 04-08-1949 | |
| Challenge of the Yukon – The Lucky Shirt (04-11-49) | 04-11-1949 | |
| Challenge of the Yukon – The Trail of the Werewolf (04-13-49) | 04-13-1949 | |
| Challenge of the Yukon – Trouble at Forty-Mile (04-15-49) | 04-15-1949 | |
| Challenge of the Yukon – The Luck of the Newtons (04-18-49) | 04-18-1949 | |
| Challenge of the Yukon – The Empty Coffin (04-20-49) | 04-20-1949 | |
| Challenge of the Yukon – The Doomed Witness (04-22-49) | 04-22-1949 | |
| Challenge of the Yukon – The Bear Trap (04-25-49) | 04-25-1949 | |
| Challenge of the Yukon – The Perfect Crime (04-27-49) | 04-27-1949 | |
| Challenge of the Yukon – Fire in the Sky (04-29-49) | 04-29-1949 | |
| Challenge of the Yukon – Escape to the North (05-02-49) | 05-02-1949 | |
| Challenge of the Yukon – The Sparrow (05-04-49) | 05-04-1949 | |
| Challenge of the Yukon – The Case of the Hard-Hearted Hermit (05-06-49) | 05-06-1949 | |
| Race to Twenty Mile – Challenge of the Yukon (05-09-49) | 05-09-1949 | |
| The Million Dollar Deadline – Challenge of the Yukon (05-11-49) | 05-11-1949 | |
| The Skagway-Mail – Challenge of the Yukon (05-13-49) | 05-13-1949 | |
| The Counter Plan – Challenge of the Yukon (05-16-49) | 05-16-1949 | |
| The Bad Penny – Challenge of the Yukon (05-18-49) | 05-18-1949 | |
| Adventure in Selkirk – Challenge of the Yukon (05-20-49) | 05-20-1949 | |
| The Duel – Challenge of the Yukon (05-23-49) | 05-23-1949 | |
| Death and the Lucky Seven – Challenge of the Yukon (05-25-49) | 05-25-1949 | |
| The Skull in the Stone – Challenge of the Yukon (05-27-49) | 05-27-1949 | |
| The Case of the Turncoat Mountie – Challenge of the Yukon (05-30-49) | 05-30-1949 | |
| The Case of the Frightened Child – Challenge of the Yukon (06-01-49) | 06-01-1949 | |
| The Case of the Canyon Holdup – Challenge of the Yukon (06-03-49) | 06-03-1949 | |
| The Missing Code – Challenge of the Yukon (06-06-49) | 06-06-1949 | |
| The Case of the Yellow Ribbon – Challenge of the Yukon (06-08-49) | 06-08-1949 | |
| A Boy and His Dog – Challenge of the Yukon (06-10-49) | 06-10-1949 | |
| The Uphill Sled – Challenge of the Yukon (06-15-49) | 06-15-1949 | |
| King Takes Over – Challenge of the Yukon (06-22-49) | 06-22-1949 | |
| The Case of the Beautiful Swindler – Challenge of the Yukon (06-29-49) | 06-29-1949 | |
| The Case of the Crown Fire – Challenge of the Yukon (07-06-49) | 07-06-1949 | |
| Trickery in the River – Challenge of the Yukon (07-13-49) | 07-13-1949 | |
| The Case of the Kind Hearted Killer – Challenge of the Yukon (07-20-49) | 07-20-1949 | |
| The Case of the Unwilling Guardian – Challenge of the Yukon (07-27-49) | 07-27-1949 | |
| The Renegade Huskie – Challenge of the Yukon (08-03-49) | 08-03-1949 | |
| What Price King – Challenge of the Yukon (08-10-49) | 08-10-1949 | |
| The Case of the Friendly Enemies – Challenge of the Yukon (08-17-49) | 08-17-1949 | |
| The Yellow Kitten – Challenge of the Yukon (08-24-49) | 08-24-1949 | |
| The Minister’s Missing Money – Challenge of the Yukon (08-31-49) | 08-31-1949 | |
| The Case of the Detective Who Liked Excitement – Challenge of the Yukon (09-07-49) | 09-07-1949 | |
| The Fan-Tan Gold Robbery – Challenge of the Yukon (09-12-49) | 09-12-1949 | |
| The Boy Who Feared Dogs – Challenge of the Yukon (09-14-49) | 09-14-1949 | |
| The Case of the Wishbone – Challenge of the Yukon (09-16-49) | 09-16-1949 | |
| Fire on the Trail – Challenge of the Yukon (09-19-49) | 09-19-1949 | |
| King and the Baxter Gang – Challenge of the Yukon (09-21-49) | 09-21-1949 | |
| The Case of the River Pirates – Challenge of the Yukon (09-23-49) | 09-23-1949 | |
| Ambush Near Selkirk – Challenge of the Yukon (09-26-49) | 09-26-1949 | |
| The Case of the Sourdough’s Dog – Challenge of the Yukon (09-28-49) | 09-28-1949 | |
| The Phantom Witness – Challenge of the Yukon (09-30-49) | 09-30-1949 | |
| The Scent of Blood – Challenge of the Yukon (10-03-49) | 10-03-1949 | |
| Murder on the Mountain – Challenge of the Yukon (10-05-49) | 10-05-1949 | |
| The Generous Hobo – Challenge of the Yukon (10-07-49) | 10-07-1949 | |
| Allen McRae’s Birthday Present – Challenge of the Yukon (10-10-49) | 10-10-1949 | |
| The Burning Cabin – Challenge of the Yukon (10-12-49) | 10-12-1949 | |
| The Great Charlotta – Challenge of the Yukon (10-14-49) | 10-14-1949 | |
| The Doctor Disappears – Challenge of the Yukon (10-17-49) | 10-17-1949 | |
| Hazel Crest Decision – Challenge of the Yukon (10-19-49) | 10-19-1949 | |
| Rescue in the Forest – Challenge of the Yukon (10-21-49) | 10-21-1949 | |
| The Missing Money – Challenge of the Yukon (10-24-49) | 10-24-1949 | |
| Bad Boy – Challenge of the Yukon (10-26-49) | 10-26-1949 | |
| The Last Will – Challenge of the Yukon (10-28-49) | 10-28-1949 | |
| Nipper Moves Himself – Challenge of the Yukon (10-31-49) | 10-31-1949 | |
| Bear Trap – Challenge of the Yukon (11-02-49) | 11-02-1949 | |
| Dr Blake’s Surrender – Challenge of the Yukon (11-04-49) | 11-04-1949 | |
| The Miser and the Mob – Challenge of the Yukon (11-09-49) | 11-09-1949 | |
| The Old Timer – Challenge of the Yukon (11-11-49) | 11-11-1949 | |
| The Senator Finds a Treasure – Challenge of the Yukon (11-14-49) | 11-14-1949 | |
| Note of Evidence – Challenge of the Yukon (11-16-49) | 11-16-1949 | |
| The Brothers’ Promise – Challenge of the Yukon (11-18-49) | 11-18-1949 | |
| The King Emperor – Challenge of the Yukon (11-21-49) | 11-21-1949 | |
| The Stolen Box – Challenge of the Yukon (11-23-49) | 11-23-1949 | |
| The Barbary Gang – Challenge of the Yukon (11-25-49) | 11-25-1949 | |
| Grubstake for Vickers – Challenge of the Yukon (11-28-49) | 11-28-1949 | |
| 48 Hours to Pay – Challenge of the Yukon (11-30-49) | 11-30-1949 | |
| Outlaw’s Twin – Challenge of the Yukon (12-02-49) | 12-02-1949 | |
| Dance at Caribou Creek – Challenge of the Yukon (12-05-49) | 12-05-1949 | |
| The Return of Tom Becket – Challenge of the Yukon (12-07-49) | 12-07-1949 | |
| Swindler’s Luck – Challenge of the Yukon (12-09-49) | 12-09-1949 | |
| Copper Gulch Patrol – Challenge of the Yukon (12-12-49) | 12-12-1949 | |
| The Wainwright Cache – Challenge of the Yukon (12-14-49) | 12-14-1949 | |
| The Black Bag – Challenge of the Yukon (12-16-49) | 12-16-1949 | |
| Missing Gold – Challenge of the Yukon (12-19-49) | 12-19-1949 | |
| The Shanghaied Sergeant – Challenge of the Yukon (12-21-49) | 12-21-1949 | |
| The Sergeant’s Present | 12-23-1949 | |
| Journey for Revenge – Challenge of the Yukon (12-26-49) | 12-26-1949 | |
| Swindler’s Luck – Challenge of the Yukon (12-28-49) | 12-28-1949 | |
| The Prodigal Father – Challenge of the Yukon (12-30-49) | 12-30-1949 | |
