Keywords: blackandwhite monochrome outdoor building architecture black and white LC-DIG-NPCC-19392: U.S. Naval Observatory’s Admiral Building. Photographed by National Photo Company, between 1909-1919. (8/21/2015). LC-DIG-NPCC-19392: U.S. Naval Observatory’s Admiral Building. Photographed by National Photo Company, between 1909-1919. (8/21/2015). |