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Dr. Igor Sikorsky Visits the Lewis Flight Propulsion Laboratory ca. 1951
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Dr. Igor Sikorsky Visits the Lewis Flight Propulsi...

Nicholas ll and igor sikorsky, aircraft designer, are seen in cabin of igor sikorsky's the grand, 1913.
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Nicholas ll and igor sikorsky, aircraft designer, ...

Igor sikorsky with one of his first helicopters in 1910.
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Igor sikorsky with one of his first helicopters in...

Igor sikorsky in the cockpit of one of the world's first helicopters that he built, the bc-300, 1943.
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Igor sikorsky in the cockpit of one of the world's...

Igor sikorsky working in his factory.
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Igor sikorsky working in his factory.

Igor sikorsky demonstrating his four-engined biplane, 'ilya muromets', in 1914.
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Igor sikorsky demonstrating his four-engined bipla...

Igor sikorsky flying one of his early designs.
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Igor sikorsky flying one of his early designs.