Items

• [D8004ZEI], Telegram from Longworth Powers to Thomas Alva Edison, August 5th, 1880
  1880-08-05
• [D8120ZAM], Telegram from Longworth Powers to Thomas Alva Edison, May 15th, 1881
  1881-05-15
• [D8120ZAN], Letter from Longworth Powers to Thomas Alva Edison, May 26th, 1881
  1881-05-26
• [D8120ZAQ], Letter from Longworth Powers to Thomas Alva Edison, June 28th, 1881
  1881-06-28
• [D8132ZAY], Letter from Longworth Powers to Thomas Alva Edison, October 18th, 1881
  1881-10-18
• [D8503ZDX], Letter from Longworth Powers to Thomas Alva Edison, November 19th, 1885
  1885-11-19
• [D8704AAD], Letter from Longworth Powers to Thomas Alva Edison, January 16th, 1887
  1887-01-16
• [X098A046], Letter from Longworth Powers to William Joseph Hammer, July 22nd, 1889
  1889-07-22