USAAS & USAAF
WW1 US Army Air Service
Standard Issue Summer Weight Flying Helmet Private First Class Quido "Turk" Novotny Mitchel Field
WW2 US Army Air Force
A-11 USAAF 92nd BG 326th BS S/Sgt M.F. Mulvihill B-17 FLYING FORTRESS
Type C (early) USAAF 352th FG Col James D. Mayden P-51D MUSTANG
B-6 USAAF 447th BG 708th BS Lt G.L. Betker B-17 FLYING FORTRESS
Type C (late) USAAF 56th FG Lewis V. Bavman P-47D THUNDERBOLT