Items

• [D8230ZBF], Letter from Francis Robbins Upton to Thomas Alva Edison, July 21st, 1882
  1882-07-21
• [LB007752], Letter from Thomas Alva Edison to Francis Robbins Upton, July 24th, 1882
  1882-07-24
• [LB016203], Letter from Samuel Insull to Edison Lamp Co, April 27th, 1883
  1883-04-27