Image: R-4 AC HNS1 3 300
Size of this preview: 756 × 600 pixels. Other resolutions: 303 × 240 pixels | 2,107 × 1,672 pixels.
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Description: Original Caption: "Comdr. Frank A. Erickson, USCG & Dr. Igor Sikorsky, Sikorsky Helicopter HNS-1 C.G. #39040."
Title: R-4 AC HNS1 3 300
Credit: http://www.uscg.mil/history/WEBAIRCRAFT/AC_Sikorsky_HNS1.html
Author: USCG Photo #: 232-8 Photographer: U.S. Coast Guard
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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