Tinfoilphono Posted June 24, 2023 Share Posted June 24, 2023 This undated video (probably made 20+ years ago) shows the late Charley Hummel demonstrating his Bergmann Exhibition tinfoil phonographs -- one of only four believed to be in private hands). https://apsblobdeve.blob.core.windows.net/multimedia-aps/The Edison Tinfoil Machine.mp4 1 2 Link to comment Share on other sites More sharing options...
melvind Posted June 24, 2023 Share Posted June 24, 2023 What a wonderful piece to remember Charley and his knowledge for all of us to enjoy. Thanks so much for posting! Link to comment Share on other sites More sharing options...
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