Items

• [E1603AE2], Letter from West Orange Laboratory to Philadelphia Public Ledger, Herbert Bruce Brougham, January 17th, 1916
  1916-01-17
• [E1658AZ], Letter from James Carroll Beckwith to Philadelphia Public Ledger, Herbert Bruce Brougham, May 20th, 1916
  1916-05-20
• [LB112387], Letter from Thomas Alva Edison to Herbert Bruce Brougham, June 3rd, 1916
  1916-06-03