S. Dillon and Mary Ripley Across from South Yard, by Unknown, 1987, Smithsonian Archives - History Div, Smithsonian Secretary S. Dillon Ripley standing with his wife, Mary Livingston Ripley, on the roof of building across from South Yard. Aerial view shows Smithsonian Institution Building (SIB), Enid A. Haupt Garden, National Museum of African Art (NMAfA) (right) and Arthur M. Sackler Gallery (AMSG) (left)..