National Museum of American History celebrates 50th anniversary
Born out of postwar optimism about America's rising technological prowess, the Smithsonian Institution's National Museum of American History has evolved over it...
Hall of Physical Sciences Visitors examine exhibits in the Hall of Physical Sciences (once called Business and Astronomy) in the National Museum of History and Technology, now the National Museum of American History, in May 1972.
(Photo courtesy of Smithsonian Institution Archives)