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Alexander Graham Bell's telephone patent drawing and the oath signed on March 7, 1876, a critical moment in the development of the telephone and communication technology.
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Alexander Graham Bell's telephone patent drawing a...

An old cigarette card (c. 1929) with a portrait of Alexander Graham Bell (1847–1922) and an illustration of a telephone. Bell was a Scottish-born inventor, scientist, and engineer who is credited with...
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An old cigarette card (c. 1929) with a portrait of...

Alexander Graham Bell at the unveiling of a plaque commemorating the 1876 invention of the telephone, Boston, Mass., 1916
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Alexander Graham Bell at the unveiling of a plaque...

Experimental telephone by Alexander Graham Bell, demonstrated at the Philadelphia Centennial Exposition of 1876. EM*252599.
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Experimental telephone by Alexander Graham Bell, d...