Secretary Ripley at Quad Construction, by Nielsen, Kim, 1984, Smithsonian Archives - History Div, Eighth Smithsonian Secretary (1964-1984) S. Dillon Ripley (1913-2001) inspecting construction at the Quadrangle building site with (from l.), Charles Blitzer, Arthur M. Sackler, founding donor of the Arthur M. Sackler Gallery, Jill Sackler, and Mary Livingston Ripley. Quadrangle complex is to house the International Center, National Museum of African Art, and Arthur M. Sackler Gallery..