WWJ - early commercial radio broadcasting from The Detroit News

WWJ (originally station 8MK) began regular broadcasts in 1920 from studios operated by The Detroit News and is widely cited as one of the first commercial radio broadcasting stations in the United States. The station's initial broadcasts included news and information produced by the newspaper rather than experimental or amateur transmissions. WWJ's origins are documented in broadcasting histories and company records linking the station to The Detroit News building. The station continues to operate in the Detroit market under the WWJ call letters.