Swearing in of Secretary Leonard Carmichael, by Unknown, 1953, Smithsonian Archives - History Div, Swearing in of the seventh Secretary of the Smithsonian Institution Leonard Carmichael (1953-1964), with (l-r) Senator Clinton P. Anderson, Charles Greeley Abbot (fifth Secretary of the Smithsonian Institution, 1928-1944), Robert V. Fleming, Alexander Wetmore (sixth Secretary of the Smithsonian Institution, 1944-1952), Judge Harold M. Stephens (chief judge of the U.S. Court of Appeals), Leonard Carmichael, Vannevar Bush, and Representative Clarence Cannon at the induction ceremony held in the Board of Regents' Room of the Smithsonian Institution Building, the "Castle.".