Jim Ray, The Story of American Aviation
“ In plane-to-plane combat our military pilots showed a courage and initiative unequaled by ally or foe.With our entry into the war, our infant aviation industry also picked up speed. With typical American energy it built up an enviable production record before the end of the war. As America had no combat airplane designs at the start of the war, our industry turned out planes and engines of foreign design. Aircraft factories built English DH-4 observation planes, Handley-Page bombers, and SE-5 fighter planes. ”
