June 1942. Tightening a nut on a guide vane servomotor in the Tennessee Valley Authority hydroelectric plant at the Watts Bar Dam. View full size. 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information.
  BUY PRINT    June 1942. Tightening a nut on a guide vane servomotor in the Tennessee Valley Authority hydroelectric plant at the Watts Bar Dam. 4x5 Kodachrome transparency by Alfred Palmer, Office of War Information. | Click image for Comments. | Home | Browse All Photos