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Thomas Alva Edison was working on Mary had a Little Lamb
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Clement Ader used carbon to make microphones and headphones
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Edison introduces electric motor driven phonograph
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The Victor Talking Machine Company founded by Emile Berliner
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Lee DeFroest invensts the first signal amplifier
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Enrico Caruso heard the first live broadcast
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The Society of Motion Picture Engineers was formed in NYC
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The Radio Corporation of America
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First Comercial AM Radio broadcast made in Pittsburg
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The Audio Engineering Society formed in New York City
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The first 20th Century Fox movie released on Christmas named The Robe
