Secretary I. Michael Heyman with Birthday Cake in Shape of SIB, by Russo, Carolyn, August 10, 1996, Smithsonian Archives - History Div, Secretary I. Michael Heyman is standing behind a birthday cake shaped like the Smithsonian Institution Building for the 150th Birthday Party on the Mall, August 10, 1996. Behind Secretary Heyman a partial view of the front of the Smithsonian Institution Building itself..