Items

• [D7922S], Letter from Haid Mueller & Co to Thomas Alva Edison, September 4th, 1879
  1879-09-04
• [D8026U], Telegram from Haid Mueller & Co to Thomas Alva Edison, January 11th, 1880
  1880-01-11
• [D8026W], Letter from Haid Mueller & Co to Thomas Alva Edison, January 12th, 1880
  1880-01-12