In The News Posted January 26, 2013 Share Posted January 26, 2013 As part of its commemoration of the 150th anniversary of the American Civil War, the National Air and Space Museum has posted drawings from its collection of a Civil War-era helicopter design. AVweb's Mary Grady talks with museum technician Tom Paone for more about the story. View the full article Link to comment Share on other sites More sharing options...
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