Cover image: John O. Bostrup took this photograph (HABS DC-152) of the Double House at 1061-1063 Potomac Street in Northwest Washington, DC, in April 1937. The house, now demolished, once stood in what is now the bustling commercial district in the Georgetown neighborhood. (Courtesy of the Historic American Buildings Survey, National Park Service.)

View the original cover image in the Library of Congress's Historic American Buildings Survey collection.