General & Other Manufacturers
MAYBORN, Mitch
Grumman Guidebook
American Aircraft Series Book 4
Volume 1 - History of pre-war Grumman fighters FF-1, F2F, F3F, the Duck, Goose, Widgeon, the Wildcat Fighters of World War II, the Skyrocket and the XP-50.
McDANIEL, William H.
The History of Beech
Four Decades of Aeronautical and Aerospace Achievement
PARKIN, J.H.
Bell and Baldwin
Their Development of Aerodynamics and Hydrodromes at Baddeck, Nova Scotia
