Executive Branch & Presidents Video & Audio
Presidential Media
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The online audio-video archive of the American Presidency Project contains materials dating to the administration of Herbert Hoover.
Classic Election Ads
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History.com maintains a US Presidential Elections page that includes audio and video recordings of campaign speeches, debates, and ads, including Lyndon Johnson's ad campaign against Barry Goldwater and the Lloyd Bentsen-Dan Quayle vice presidential debate of 1988.