1924. "De Forest Phonofilm Co. Inc. on White House grounds." The inventor and "father of radio" Lee de Forest, center, and components of his sound-on-film system. National Photo Company glass negative. View full size.
  BUY PRINT    1924. "De Forest Phonofilm Co. Inc. on White House grounds." The inventor and "father of radio" Lee de Forest, center, and components of his sound-on-film system. National Photo Company glass negative. | Click image for Comments. | Home | Browse All Photos