Igor Sikorsky, Sikorsky R4 - Air Force Museum, WPAFB, Sept 11, 1962.

Sikorsky Aircraft photo. From Vertiflite (AHS Newsletter) Apr 1963.

Igor Sikorsky, Sikorsky R4 - Air Force Museum, WPAFB, Sept 11, 1962

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Igor Sikorsky, Sikorsky R4 - Air Force Museum, WPAFB, Sept 11, 1962.

Sikorsky Aircraft photo. From Vertiflite (AHS Newsletter) Apr 1963.

 

Added to Historical Records - Igor... and categorized in 1 month ago

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