Items

• [D8239ZBZ1], Letter from Edward Hibberd Johnson to Thomas Alva Edison, June 4th, 1882
  1882-06-04
• [LB011001], Letter from Thomas Alva Edison to Edward Hibberd Johnson, January 2nd, 1882
  1882-01-02
• [X098A002A] List, Undated
• [X098A020], Letter from Edward Hibberd Johnson to Thomas Alva Edison, April 9th, 1882
  1882-04-09
• [X098F09], Technical Note, William Joseph Hammer, 1882
  1882-00-00
• [X098FA083A], Diary, William Joseph Hammer, October 29th, 1881
  1881-10-29
• [X098FA083B], Diary, William Joseph Hammer, November 12th, 1881
  1881-11-12
• [X098FA106A], Diary, William Joseph Hammer, September 1881
  1881-09-00
• [X098FA111A], Diary, William Joseph Hammer, October 9th, 1881
  1881-10-09
• [X098HC11] List, Undated