Items

• [E1740AK], Letter from Thomas Alva Edison to Brown (A.andF.) Co, Williams Patent Crusher and Pulverizer Co, Holmes and Blanchard Co, March 19th, 1917
  1917-03-19
• [LB116442], Letter from William Henry Meadowcroft to Brown (A.andF.) Co, March 20th, 1917
  1917-03-20