1st Class Sgt J. W. R. Linder, 1st Sergeant  800th Aero Squadron, 2d Artillery Observation School, Camp de Tir de Souges, France, 26 August 1917 - 16 October 1918
Air Service, United States Army photograph
1918
Air Service, United States Army photograph, Gorrell's History of the American Expeditionary Forces Air Service, Series E Squadron Histories Volume 25 History of the 800th-803d, 805th, 806th, 825th-830th, 835th, 837th, 875th, 1099th, 1101st-1108th, and 1111th Aero Squadrons via <a rel="nofollow" class="external free" href="http://www.fold3.com">http://www.fold3.com</a>