Items

• [D8123ZBJ], Letter from Alfred Haid to Thomas Alva Edison, May 3rd, 1881
  1881-05-03
• [D8123ZBN], Letter from Alfred Haid to Thomas Alva Edison, May 6th, 1881
  1881-05-06
• [D8403ZGK], Letter from Alfred Haid to Samuel Insull, September 12th, 1884
  1884-09-12
• [D8513ZAE], Letter from Alfred Haid to Thomas Alva Edison, December 17th, 1885
  1885-12-17
• [D8805AIQ], Letter from Alfred Haid to Thomas Alva Edison, November 3rd, 1888
  1888-11-03
• [N050003], Technical Note, Alfred Haid, Thomas Alva Edison, April 17th, 1880
  1880-04-17
• [N050006] Technical Note, April 1880
  1880-04-00
• [N050013] Technical Note, April 1880
  1880-04-00
• [N050016], Technical Note, Alfred Haid, Thomas Alva Edison, May 1880
  1880-05-00
• [N134001], Technical Note, Alfred Haid, August 9th, 1880
  1880-08-09
• [W100DEC021], Legal Testimony, Alfred Haid, August 29th, 1881
  1881-08-29