William J. Hammer standing in front of the Wright Type A Military Flyer (Signal Corps No. 1) on the ground at Fort Myer, Virginia, during the 1909 Wright Military Flyer Army Trials. The man standing at right background (back to camera) is believed to be Wilbur Wright. Source: Image 2006-21904.tif, from the William J. Hammer Collection, National Air & Space Museum, Smithsonian Institution, Washington, DC (hereafter NASM Hammer Collection #0074)
