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EN
Scientific American
New York magazine at whose office Edison showed his phonograph in December 1877.
Work
Identifiers
Wikidata Q39379
Appears in
1 item
Recorded Sound
1 item
Edison’s tinfoil phonograph
· demonstration site
Dec 1877
Sources
Book
The Fabulous Phonograph, 1877–1977
Archival
Improvement in Phonograph or Speaking Machines, US Patent 200,521
