Nov 2, 1920: First Commercial Radio Broadcast in the U.S. - YouTube
1920: First Commercial Radio Station KDKA | History of Innovation
100 years ago, KDKA gave birth to religious radio broadcasts at Calvary Episcopal in Pittsburgh | TribLIVE.com
KDKA (AM) - Wikipedia
KDKA: Broadcasting's Pioneer Station | Pennsylvania Center for the Book
Milestones:Westinghouse Radio Station KDKA, 1920 - Engineering and Technology History Wiki
100 years later: KDKA's celebration to reenact historic first broadcast of 1920 election results | Pittsburgh Post-Gazette
The Odd, Mysterious & Fascinating History of Pittsburgh - Tune into KDKA Radio at 2pm TODAY as Mangino & I continue our quest of "This Week In #Pittsburgh History" Listen live on
KDKA: Form 761 Application and First Licence (1920)