Items

• [D8938ABS], Letter from Edison Lamp Co, Francis Robbins Upton to Arnold Marcus, November 1st, 1889
  1889-11-01
• [D8938ABT], Letter from Francis Robbins Upton to Arnold Marcus, November 4th, 1889
  1889-11-04
• [D8938ABV], Test Report, Edison Lamp Co, John White Howell, November 5th, 1889
  1889-11-05
• [LB039359], Letter from Alfred Ord Tate to Samuel Insull, April 7th, 1890
  1890-04-07