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Vintage Voice-o-graph Recording Disc Retro Phonograph Record - Etsy
Aluminium 'Message' Discs to CD | Audio Restored
Phonograph record - Wikipedia
IRENE Tested on Aluminum Discs — NEDCC
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Preservation Self-Assessment Program (PSAP) | Phonograph Record
Optical Recording on Disc, Digitization of audio signal, Playback Process, Compact Disc - YouTube
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2.3.1 Recording principle | International Association of Sound and Audiovisual Archives
A Brief History of Recording to ca. 1950
Listen to the ghostly recording of a Coventry man from the 1930's - CoventryLive
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Grooved Media Examples — Endpoint Audio Labs
Sandburg Recordings on Aluminum Discs – Western Illinois Museum
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