Items

Items

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  [E1704AR], Letter from Thomas Alva Edison to Popular Science Monthly, Waldemar Bernhard Kaempffert, March 5th, 1917

  1917-03-05
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  [E1903AI], Letter from William Henry Meadowcroft to Popular Science Monthly, Waldemar Bernhard Kaempffert, May 21st, 1919

  1919-05-21
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  [E1903AJ], Letter from William Henry Meadowcroft to Popular Science Monthly, Waldemar Bernhard Kaempffert, May 22nd, 1919

  1919-05-22
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  [E1903AL], Letter from Thomas Alva Edison to Waldemar Bernhard Kaempffert, Popular Science Monthly, May 28th, 1919

  1919-05-28
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  [E1903AL1], Letter from William Henry Meadowcroft to Popular Science Monthly, Waldemar Bernhard Kaempffert, May 29th, 1919

  1919-05-29
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  [E1903AP], Letter from William Henry Meadowcroft to Popular Science Monthly, Waldemar Bernhard Kaempffert, June 4th, 1919

  1919-06-04
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  [LB116305], Letter from Thomas Alva Edison to Waldemar Bernhard Kaempffert, March 5th, 1917

  1917-03-05