Panoramic view of the Navy Yard waterfront, looking north from across the Anacostia River, circa 1927. Ships present are (from left to right): probably USS Porpoise (YFB-2047); USS Allen (DD-66), Naval Reserve training ship; an Eagle Boat (PE); USS Mayflower (PY-1), Presidential Yacht; and probably USS Sylph (PY-12). Courtesy of the U.S. Naval Institute Photographic Collection, 1981. U.S. Naval History and Heritage Command Photograph.