The voice on a sound recording from 1885 is technologically deciphered and found to be that of Alexander Graham Bell
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Volta Laboratory Disc Recording - Surface Detail |
Christmas Holiday Commemorative Stamp |
Florida Statehood Commemorative Stamp |
Humphrey Bogart Commemorative Stamp |
Wong Kim Ark |
Grand Procession: Dolls from the Charles and Valerie Diker Collection |
Time and Navigation - Bond Chronometer |
Time and Navigation - Bygrave Position-Line Slide Rule |