Photoradio: What it is and How it Serves [wrapper title; caption title:] The Photoradiogram Service.
[New York? n. p., ca. 1927]. First edition. Original printed orange wrappers, 9.5 x 6 inches, wire stitched, 8 pages. Illus. An early example of transmission of visual information over networks, a promotional pamphlet from RCA on the wireless transmission of images as a boon to business, banking, news, and..... More