File:Carbon Transmitter.jpg
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Carbon_Transmitter.jpg (250 × 354 pixels, file size: 21 KB, MIME type: image/jpeg)
A telephone using a carbon button. Courtesy: National Park Service, Edison National Historic Site.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:24, 9 September 2008 | 250 × 354 (21 KB) | EMW (talk | contribs) | A telephone using a carbon button. Courtesy: National Park Service, Edison National Historic Site. |
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