Items

• [D9723AAD], Letter from Ingersoll (Robert H.) and Bro to Thomas Alva Edison, July 6th, 1897
  1897-07-06
• [E1525AW], Letter from Ingersoll (Robert H.) and Bro to William Henry Meadowcroft, November 29th, 1915
  1915-11-29
• [E1922DU], Letter from Carl R Hoffmann, Ingersoll (Robert H.) and Bro to William Henry Meadowcroft, December 15th, 1919
  1919-12-15
• [MF14BZ], Letter from Ingersoll (Robert H.) and Bro to William Henry Meadowcroft, April 18th, 1917
  1917-04-18