Items

Items

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  [D7940ZBG], Letter from Berthon (A.) & Co to Thomas Alva Edison, September 24th, 1879

  1879-09-24
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  [D8048X1], Memorandum, Berthon (A.) & Co, Societe du Telephone Edison, February 22nd, 1880

  1880-02-22
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  [D8048ZAL1], Publication, Societe du Telephone Edison, Berthon (A.) & Co, March 1880

  1880-03-00