Items

• [LB008239], Letter from Thomas Alva Edison to Frank Whipple, May 6th, 1881
  1881-05-06
• [LB018092], Letter from Samuel Insull to Frank Whipple, June 25th, 1884
  1884-06-25
• [LB027178], Letter from Thomas Alva Edison to Frank Whipple, November 26th, 1888
  1888-11-26