68 books • 14 series
Mustang Aces of the Ninth & Fifteenth Air Forces & the RAF (Osprey Aircraft of the Aces S., #7)
Bf 109 Aces of North Africa and the Mediterranean (Osprey Aircraft of the Aces S., #2) (Aircraft of the Aces)
Mustang Aces of the Eighth Air Force (Osprey Aircraft of the Aces S., #1) (Aircraft of the Aces)