soviet air force Women Aloft Flight International Encyclopedia of Aviation War in the air : aerial wonders of our time Black wings : the American black in aviation Flying machines : the picture of the men, women and machines which first conquered space Air forces of the world : an illustrated directory of all the world's military air powers Aircraft aircraft Chronology of significant aerospace events March 1903-December 1971 Air power : a Concise History sky their frontier : the Story of the World's Pioneer Airlines and Routes 1920-1940
