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Letter from Theodore N. Vail to Alexander Graham Bell, May 26, 1881

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Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

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telephone photophone volta laboratory washington dc inventions american bell telephone company correspondence alexander graham bell family papers 1834 1974 subject file alexander graham bell family papers at the library of congress american memory alexander graham bell theodore n vail high resolution manuscripts ultra high resolution
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01/01/1881
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Library of Congress
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https://www.loc.gov/
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label_outline Explore Theodore N Vail, Volta Laboratory Washington Dc

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telephone photophone volta laboratory washington dc inventions american bell telephone company correspondence alexander graham bell family papers 1834 1974 subject file alexander graham bell family papers at the library of congress american memory alexander graham bell theodore n vail high resolution manuscripts ultra high resolution