'The Winged-S � II', The New Yorker
Tags: 1940; 1940-8-17; 1940s; Aeronautics and Aerospace; Aviation; Engineering; Hellman, Geoffrey T.; Igor Sikorsky; United Aircraft
'The Winged-S � I', The New Yorker
Tags: 1940; 1940-8-10; 1940s; Aeronautics and Aerospace; Aviation; Engineering; Hellman, Geoffrey T.; Igor Sikorsky; United Aircraft
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