Lee De Forest, a pioneer of wireless communication, served as a faculty member at Lewis Institute during the turn of the twentieth century.... Show moreLee De Forest, a pioneer of wireless communication, served as a faculty member at Lewis Institute during the turn of the twentieth century. During that time he conducted his first long-distance broadcasts from the roof of Main Building at the Armour Institute of Technology. De Forest also invented of the Audion three-element vacuum tube and patented a method of recording sound on film that the movie industry would later adopt. Photographer uknown. Show less
Photography of Edwin Lewis (left) and Lee de Forest (right). Lewis was a faculty member at the Lewis Institute and held various administrative... Show morePhotography of Edwin Lewis (left) and Lee de Forest (right). Lewis was a faculty member at the Lewis Institute and held various administrative posts. De Forest, a pioneer of wireless communication, served as a faculty member at Lewis Institute during the turn of the twentieth century. During that time he conducted his first long-distance broadcasts from the roof of Main Building at the Armour Institute of Technology. De Forest also invented of the Audion three-element vacuum tube and patented a method of recording sound on film that the movie industry would later adopt. Photographer uknown. Show less
Photograph of office personnel of the Lewis Institute. Rear of photograph identifies the subjects as (standing) Stanley Stelzer(?), Prue... Show morePhotograph of office personnel of the Lewis Institute. Rear of photograph identifies the subjects as (standing) Stanley Stelzer(?), Prue Nelson(?), Elizabeth Cadigan (switchboard operator and "Voice of the Lewis Institute") and (seated) Johnson and Givens. Date unknown. Date range provided is estimated. Photographer unknown. Show less
