1. The Bird Boys; or, The Young Sky Pilots' First Air Voyage.
2. The Bird Boys on the Wing; or, Aeroplane Chums in the Tropics.
3. The Bird Boys Among the Clouds; or, Young Aviators in a Wreck.
4. Bird Boys' Flight; or, A Hydroplane Round-up.
5. Bird Boys' Aeroplane Wonder; or, Young Aviators on a Cattle Ranch.
CANOE AND CAMPFIRE SERIES
By St. George Rathborne
1. Canoe Mates in Canada; or, Three Boys Afloat on the Saskatchewan.
2. Young Fur Takers; or, Traps and Trails in the Wilderness.
3. The House Boat Boys; or, Drifting Down to the Sunny South.
4. Chums in Dixie; or, The Strange Cruise in the Motor Boat.