Queen Elizabeth II views the “The Federal City: Plans and Realities” exhibition in the Smithsonian Institution Building, or Castle, with Secretary S. Dillon Ripley,wearing academic robes and the Smithsonian Badge of Office; Chief Justice Warren Burger; and Vice President Nelson Rockefeller; during her visit to the United States to commemorate the Bicentennial of the American Revolution. (Photo by James . Wallace, via Smithsonian Institution Archives)
