Eagles of the Sky; Or, With Jack Ralston Along the Air Lanes
Wings Over the Rockies; Or, Jack Ralston's New Cloud Chaser
The Sky Pilot's Great Chase; Or, Jack Ralston's Dead Stick Landing
Flying the Coast Skyways; Or, Jack Ralston's Swift Patrol
The Sky Detectives; Or, How Jack Ralston Got His Man
Trackers of the Fog Pack; Or, Jack Ralston Flying Blind