14 books
In the Clouds for Uncle Sam; or, Morey Marshall of the Signal Corps
A Cruise in the Sky; or, The Legend of the Great Pink Pearl
Battling the Bighorn; or, The Aeroplane in the Rockies
The Stolen Aeroplane: Or How Bud Wilson Made Good (Classic Reprint)
Battling the Bighorn
A Cruise in the Sky
The Aeroplane Express or the Boy Aeronaut's Grit
The Aeroplane Express
The Stolen Aeroplane Or, How Bud Wilson Made Good
The Stolen Aeorplane
In the Clouds for Uncle Same
On the Edge of the Arctic; Or, an Aeroplane in Snowland
The Air Ship Boys Or, the Quest of the Aztec Treasure
On the Edge of the Arctic; Or, an Aeroplane in Snowland(Dodo Press)