The Radio Boys in Darkest Africa

Tom Swift and His Electric Rifle; Or, Daring Adventures in Elephant Land

The Radio Boys' First Wireless; Or, Winning the Ferberton Prize

The Adventures of Dick Maitland: A Tale of Unknown Africa

The African Trader; Or, The Adventures of Harry Bayford

The Radio Boys Rescue the Lost Alaska Expedition

The Radio Boys on Secret Service Duty

The Radio Boys Under the Sea; or, The Hunt for Sunken Treasure

The Radio Boys with the Border Patrol

The Radio Girls at Forest Lodge; or, The Strange Hut in the Swamp

The Radio Boys with the Iceberg Patrol; Or, Making safe the ocean lanes

The movie boys in the jungle