Items

Items

• 

  [E1518IDA], Letter from Powers-Weightman-Rosengarten to Thomas Alva Edison, September 25th, 1915

  1915-09-25
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  [E1518KBA], Letter from Powers-Weightman-Rosengarten to William Henry Meadowcroft, November 15th, 1915

  1915-11-15
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  [E1616BAH], Letter from Powers-Weightman-Rosengarten to West Orange Laboratory, February 1st, 1916

  1916-02-01
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  [X501A14], Letter from Powers-Weightman-Rosengarten to Edison Storage Battery Co, Thomas Alva Edison, October 20th, 1924

  1924-10-20