1923 Rotogravure Wireless Radio Scientific Advances Broadcasting Deaf Hearing

"Strides in Radio Development" This is an original 1923 sepia rotogravure with four images of wireless radio: C. Francis Jenkins with his invention that he claims will make possible the transmission of moving pictures by radio; the private broadcasting station on the estate of Colonel Edward H.R. Green; the uni-control receiver developed by Dr. Alfred N. Goldsmith; and Harold Land of the California School for the Deaf with his device to help the deaf hear by means of vibration. CONDITIONThis 91+ year old Item is rated Very Fine +++. No creases. No surface rub. No tears. No water damage. Please note: There is printing on the verso. Product Type: Original Rotogravure; Sepia Grade: Very Fine +++ Dimensions: Approximately 9.75 x 14.75 inches; 25 x 37 cm Authentication: Serial-Numbered Certificate of Authenticity w/ Full Provenance Protection: Packaged in a custom archival sleeve with an acid-free black board (great for display, gift-giving, and preservation) Period Paper is pleased