Refitting Hands of the Castle Clock, Flag Tower, Smithsonian Institution Building, by Long, Eric, 1991, Smithsonian Archives - History Div, National Museum of American History's David Todd lends his clockmaker's art to the tricky job of refitting the newly gold-leafed hands to the clock of the Flag Tower of the Smithsonian Institution Building. Scaffolding has been erected. The image looking north, shows the National Museum of American History across the National Mall..