Tom Derringer and the Aluminum Airship

When he was eight years old, Tom Derringer discovered his father's journal and learned that the late Jack Derringer was a professional adventurer. For the next eight years Tom studied and trained to follow in his father's footsteps. Then in 1882, when a mysterious flying object appeared in the Arizona sky, Tom set out after it -- and he and his plucky companion Betsy Vanderhart found themselves pursuing a would-be conqueror through the skies and jungles of Mexico...

• Tom Derringer in the Tunnels of Terror (The Adventures of Tom Derringer) (Volume 2)
• The Rebirth of Wonder
• Stone Unturned: A Legend of Ethshar
• Vika's Avenger
• Above His Proper Station (The Fall of the Sorcerers)