File:Vintage Radio Advertising - RCA Victor, "Go Overseas for only $14.95", Circa 1941 (9707444479).jpg - Wikimedia Commons
Vintage GE Radio Advertisement from 1938
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History of Radio Ads | History of TV Advertisement | Vehicle Wraps SF
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Jingles and sponsorship: A brief history of radio advertising | by Radio Fidelity | Medium
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On This Day in Telephone History August 22ND 1922 - The Telephone Museum, Inc.
A brief look at the history of radio advertising – Advertising Destiny
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Radio (1922-1956) - Ad*Access Research Guide - LibGuides at Duke University
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A brief look at the history of radio advertising – Advertising Destiny
File:Vintage Radio Advertising - General Electric, "Here's the Kind of Radio You'll Want in '42", "The Complete Radio with FM", Circa 1942 (9716896673).jpg - Wikimedia Commons
ARCANE RADIO TRIVIA: The First FM Radio Ads
An interesting step back in history – worlds 1st radio commercials - Exaget
Radio advertisement 1920s hi-res stock photography and images - Alamy
History of Radio Advertising | Study.com
