John W Duffield

Don Sturdy
   1. Don Sturdy on the Desert of Mystery (1925)
     aka Autoing In The Land Of Caravans
   2. Don Sturdy with the Big Snake Hunters (1925)
     aka Lost In The Jungles Of the Amazon
   3. Don Sturdy in the Tombs of Gold (1925)
     aka The Old Egyptian's Great Secret
   4. Don Sturdy Across the North Pole (1925)
     aka Cast Away In The Land Of Ice
   5. Don Sturdy in the Land of Volcanoes (1925)
     aka The Trail Of The Ten Thousand Smokes
   6. Don Sturdy in the Port of Lost Ships (1926)
     aka Adrift In The Sargasso Sea
   7. Don Sturdy Among the Gorillas (1927)
     aka Adrift In The Great Jungle
   8. Don Sturdy Captured By Head Hunters (1928)
     aka Adrift In The Wilds Of Borneo
   9. Don Sturdy in Lion Land (1929)
     aka The Strange Clearing In The Jungle
   11. Don Sturdy On The Ocean Bottom (1931)
     aka The Strange Cruise Of The Phantom
   12. Don Sturdy in the Temples of Fear (1932)
     aka Destined For A Strange Sacrifice
   13. Don Sturdy Lost In Glacier Bay (1933)
     aka Mystery Of The Moving Totem Poles
   14. Don Sturdy Trapped in the Flaming Wilderness (1934)
     aka Unearthing Secrets In Central Asia
   15. Don Sturdy with the Harpoon Hunters (1935)
     aka The Strange Cruise Of The Whaling Ship