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BELL & DOM PEDRO, 1876. .Inventor Alexander Graham Bell (right) instructing Brazilian Emperor Dom Pedro II on the use of his telephone receiver during the Centennial Exposition at Philadelphia, 1876. (KEYSTONE/THE GRANGER COLLECTION/)
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COPYRIGHTPFLICHTIG, ALL ONLINE USE RESTRICTED TO A MAX SIZE OF 600px X 600px, Credit: The Granger Collection, New York
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KEYSTONE
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THE GRANGER COLLECTION
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2399 x 3240 px
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0076206 H
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