Phonograph Catalog/Advertisement: "I want a phonograph in every home...". The phonograph was developed as a result of Thomas Edison's work on two other inventions, the telegraph and the telephone. In 1877, Edison was working on a machine that would transcribe telegraphic messages through indentations on paper tape, which could later be sent over the telegraph repeatedly. This development led Edison to speculate that a ...
Posted: 9 years, 4 month(s) ago
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