Seventeen (17) photographs, mainly of World War I aircraft, circa 1917-1918. Also included in this group of photographs are several photographs of Hamilton Coolidge's grave. One of the photographs shows Douglas Campbell and another unidentified airman standing near the wooden grave marker, while other photographs show the stone grave marker that was put in place after the war. Identified aircraft include Curtiss JN-4 Jenny, Dorand Type A.R.1 D2, and Nieuport 28 D1.