Just found out about this Library of Congress project to digitize old Victrola recordings of very early music and spoken-word entertainment. Some speeches, some monologues & dialogues, and a whole category of "comedy" bits. You can browse the collection, create personal play lists, and listen to anything you like for free. Check it out:
http://www.loc.gov/jukebox/
"National Jukebox" offers up historic spoken-word entertainment 
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