Secretaries Carmichael, Abbot & Ripley, by Unknown, This picture is post-1964, Smithsonian Archives - History Div, Three Smithsonian Institution Secretaries standing together for this image: (l-r) Leonard Carmichael (1953-1964), Charles Greeley Abbot (1928-1944) and S. Dillon Ripley (1964-1984). All are in three piece suits and ties..