character: Thomas Edison
topic: Contributions to Hearing Technologies
grade: 11
subject: English
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character: Thomas Edison
topic: Inventions in Sound Recording
grade: 11
subject: English
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character: Thomas Edison
topic: Impact of Phonograph on Music Accessibility
grade: 11
subject: English
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character: Thomas Edison
topic: Technological Advances in Communication
grade: 11
subject: English
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