Photograph of two U.S. Army Air Service servicemen, identified in the verso inscription as Stevenson and Hewitt, circa 1917-1919.Inscription on verso: "Stevenson (San Francisco), killed over Verdun. Hewitt - Killed in USA after War."
Photograph of servicemen of the 39th C.A. Brigade (AA) with an antiaircraft gun, Seattle, Washington, circa 1917-1920.Typed on verso: "S-2. 39th CA Brigade AA. Seattle, Wash."
Photograph of Norman "Jim" Archibald (second from left) with an unidentified woman and servicemen, circa 1917-1920.Inscription on verso: "You'll notice I'm on the left. The [illegible] when I knew her is on the right."
Photograph of a Royal Aircraft Factory S.E.5 aircraft (tail number E8097, fuselage number 18) of the 95th Aero Squadron, U.S. Army Air Service, possibly in San Antonio, Texas, circa 1920. The squadron's "kicking mule" emblem is painted on the…