Items

• [LB020409], Letter from Samuel Insull to Thomas Alva Edison, July 16th, 1885
  1885-07-16
• [LB020442B], Letter from Samuel Insull to Thomas Alva Edison, August 12th, 1885
  1885-08-12
• [NM020AAK], Technical Note, Thomas Alva Edison, October 3rd, 1885
  1885-10-03