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" Ypenburg: veroverd op de zee - Van vliegveld tot woonwijk. F-15 Eagle Beyond nuclear dterence Winged Gospel; America's Romance with Aviation dag van de Liberator luchtoorlog boven Zuidwest-Friesland '40-'45 United States Navy at war : second Official Report to the Secretary of the Navy
