Zestig jaar Welschap in vogelvlucht; 1932 - 1992 Westland Sea King Helicopters in Action Bijdrage tot de physiologie der vliegers op groote hoogten Taking off: a century of manned flight 6 ARVA Squadron in Nederlands-Indië 1946-1950 Dutch Luger (Parabellum); a complete history Sikorsky Aircraft; Defence Igor Sikorsky; His Three Careers in Aviation Source Book of Vertical Take-Off Aircraft Luftwaffe vs. RAF: flying equipment of the air war, 1939-1945 V-1 Flying Bomb 1942-52: Hitler's infamous "doodlebug"
