File:Sperry M-1 NACA 1926.jpg

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English: A U.S. Army Air Corps Verville-Sperry M-1 Messenger at the National Advisory Committee for Aeronautics, Langley, Virginia (USA) 15 April 1926: The Army's Sperry M-1 Messenger tested variable-camber wings at Langley in 1926. (Text: NASA)
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Source NASA photo EL-2002-00576 [1]
Author NACA
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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current03:50, 15 October 2009Thumbnail for version as of 03:50, 15 October 20092,889 × 2,145 (925 KB)Cobatfor (talk | contribs)== {{int:filedesc}} == {{Information |Description={{en|1=A U.S. Army Air Corps Verville-Sperry M-1 ''Messenger'' at the National Advisory Committee for Aeronautics, Langley, Virginia (USA) 15 April 1926: The Army's Sperry M-1 ''Messenger'' tested variabl

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