Keywords: 80-G-38506: Naval Gun Factory, Washington Navy Yard, Washington, D.C. Shown: Punching and inspecting 20mm cartridge case blanks. Photograph released March 20, 1943. U.S. Navy photograph, now in the collections of the National Archives. (2016/03/08). 80-G-38506: Naval Gun Factory, Washington Navy Yard, Washington, D.C. Shown: Punching and inspecting 20mm cartridge case blanks. Photograph released March 20, 1943. U.S. Navy photograph, now in the collections of the National Archives. (2016/03/08). |