5 books • 2 series
Book #1: Bell P-39Q Airacobra
Book #2: PZL P.11c
Book #3: Hawker Hurricane 1
Book #4: NAA P-51D-10-NA Mustang
Book #5: Mikoyan Gurevich MiG-17F/LIM-5
Book #18: Henschel HS 129
Book #21: Messerschmitt Me 163 Komet