12 books • 1 series
Rodeo School (Schools for action)
Gymnastics School (Schools for action)
Race Car Drivers School (Schools for action)
Pursuit School (Schools for action)
Motorcycle Moto Cross School (Schools for action)
Motorcycle Mutt
Salt Cycle
Chopper Cycle
On the Sand
Scramble Cycle
Buggy Go Round
On the Drag Strip