Air and Space Museum's 40th Anniversary

National Air and Space Museum , Smithsonian Institution
April 26, 2016
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Visitors at Air and Space Museum
National Air and Space Museum , Smithsonian Institution

Just 25 days after opening on July 1, 1976, the National Air and Space Museum welcomed its millionth visitor. This photograph, taken December 28, 1976, shows visitors in the Milestones of Flight hall.

Photo courtesy National Air and Space Museum, Smithsonian Institution