Photographed at Tours, France, on September 18, 1918, this image is inscribed to the 2nd Aviation Instruction Center -- a U.S. Army Air Service facility where American airmen received flight and mechanical training during the final year of World War I. The weathered stone building and gateway, captured on a fragile glass-plate negative, offer a rare glimpse of daily life around one of the era's key aviation training grounds. Project: 218364