Thomas Edison re-enacts his constructing of the electric light bulb as Henry Ford and Francis Jehl look on, October 21, 1929

CREDIT: "Thomas Edison re-enacts his constructing of the electric light bulb as Henry Ford and Francis Jehl look on, October 21, 1929." Photo courtesy of the Henry Ford Museum and Greenfield Village for "Henry Ford Museum and Greenfield Village," a Michigan Local Legacies project