哈丁總統在白宮裝設無線電:1922年2月8日
人們聚在一起聽廣播 (1920年代與1930年代)
出處: French, Herbert E., photographer. "Atwater Kent, Standing By Radio, and Seven Other People Listening to the Radio." National Photo Company, between 1920 and 1930. Prints and Photographs Division, Library of Congress.