Group of US Army Signal Corps instructors posing in front of Men's Gymnasium (now Langston Hall). Period marking on reverse: "Instructors - U.S. Training Detachment, Corvallis, Oregon, Aug 15th 1918." Also includes description of unit: "US Signal Corps Radio Telegraphy & Telephony, Oregon Agricultural College, Corvallis, Oregon." Marking at far top right corner: "from Percy."
