Items

• [D8120ZAI], Letter from Horatio Nelson Powers to Thomas Alva Edison, March 5th, 1881
  1881-03-05
• [D8204ZHW], Letter from Horatio Nelson Powers to Thomas Alva Edison, October 18th, 1882
  1882-10-18
• [D8414ZAC], Letter from Horatio Nelson Powers to Thomas Alva Edison, August 11th, 1884
  1884-08-11
• [D8850AAD], Letter from Horatio Nelson Powers to Thomas Alva Edison, January 5th, 1888
  1888-01-05
• [D8850ABQ1], Phonogram from Horatio Nelson Powers to George Edward Gouraud, Thomas Alva Edison, June 16th, 1888
  1888-06-16