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愛迪生發明留聲機

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Advertisement 'I want a phonograph in every home...'.

湯瑪斯愛迪生現身留聲機廣告

出處: "Phonograph Catalog/Advertisement: 'I want a phonograph in every home...'." Edison Manufacturing Co. Inventing Entertainment: The Motion Pictures and Sound Recordings of the Edison Companies, Library of Congress.