File:Phonautograph made by Alexander Bell.png

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Phonautograph_made_by_Alexander_Bell.png ‎(310 × 368 pixels, file size: 85 KB, MIME type: image/png)

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English: Phonautograph made by Alexander Bell
Date
Source Gray, Charlotte. Reluctant genius. Alexander Graham Bell and the passion for invention. — New York: Arcade Publishing, 2011. — ISBN 978-1-61145-060-6.
Author Unknown authorUnknown author

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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Phonautograph_made_by_Alexander_Bell.png

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current09:31, 8 December 2020Thumbnail for version as of 09:31, 8 December 2020310 × 368 (85 KB)CodeName47km (talk | contribs)Uploaded a work by Unknown from Gray, Charlotte. Reluctant genius. Alexander Graham Bell and the passion for invention. — New York: Arcade Publishing, 2011. — ISBN 978-1-61145-060-6. with UploadWizard

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