First KDKA radio broadcast sparked a revolution | Local News | observer-reporter.com
The Pennsylvania Center for the Book - KDKA
radio | Definition, History, & Facts | Britannica
KDKA Centennial
A Science Odyssey: People and Discoveries: KDKA begins to broadcast
KDKA | radio station, Pittsburgh, Pennsylvania, United States | Britannica
KDKA First to Broadcast Baseball - 1921
Nov 2, 1920: First Commercial Radio Broadcast in the U.S. - YouTube
KDKA (AM) - Wikipedia
1920: First Commercial Radio Station KDKA | History of Innovation
KDKA (AM) - Wikipedia
KDKA Memories: Celebrating 95 Years of KDKA Radio – CBS Pittsburgh
History of advertising: No 160: The first radio commercials | Campaign US
The Pennsylvania Center for the Book - KDKA
KDKA (AM) - Wikipedia
Radio100 Moment 1: KDKA Makes First Commercial Broadcast (November 2, 1920) | We Are Broadcasters
The night Pittsburgh transformed the world | Pittsburgh Post-Gazette
Early Stages of Soviet and American Radio Broadcasting
Pittsburgh's KDKA-AM turns 100, looks forward with new FM signal
KDKA's century of radio is filled with broadcasting firsts and iconic personalities | TribLIVE.com
Sept. 29, 1920: Radio Goes Commercial | WIRED
Radio & TV | Digital Collections Blog
Re-enactment Commemorates 100th Anniversary Of First Commercial Radio Broadcast | 90.5 WESA
Constructing the First “Real” Radio Station - Radio World
