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0390000687

Edison carbon telephone: sending and receiving apparatus with battery box at base. Solid metal diaphragm. Wood engraving, New York 1890

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0390000687.jpg
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Irish Photo Archive
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6000x8536 / 2.4MB
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Edison carbon telephone: sending and receiving apparatus with battery box at base. Solid metal diaphragm. Wood engraving, New York 1890