Underwater Archaeology Exhibition Tour for National Associates, by Hofmeister, Richard K, 1972, Smithsonian Archives - History Div, Mendel L. Peterson, Curator of the National Museum of History and Technology, now the National Museum of American History, Division of Historic Archeology guiding National Associates members on tour of the underwater archeology exhibits, April 22, 1972. This tour was a part of the three day "Weekend at the Smithsonian" program attended by 56 National Associates members..