Items

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Items

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  [X098C013], Letter from William Joseph Hammer to Franklin Institute, William Henry Wahl, January 12th, 1889

  1889-01-12
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  [SC91009B1], Letter from Edison Electric Light Co of Philadelphia, William Dennis Marks to William Henry Wahl, Franklin Institute, February 2nd, 1891

  1891-02-02
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  [LB025089G], Letter from Thomas Alva Edison to Franklin Institute, William Henry Wahl, September 12th, 1887

  1887-09-12
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  [LB014287A], Letter from Thomas Alva Edison to Franklin Institute, William Henry Wahl, October 13th, 1882

  1882-10-13