Items

• [QD012E2652], Report from Franklin Institute, William Penn Tatham, July 8th, 1885
  1885-07-08
• [X250AAQ], Letter from William Penn Tatham to Edward Weston, November 17th, 1884
  1884-11-17
• [X250AAR], Letter from William Penn Tatham to Edward Weston, November 20th, 1884
  1884-11-20
• [X250AAT], Letter from William Penn Tatham to Edward Weston, November 20th, 1884
  1884-11-20
• [X250ABJ], Letter from William Penn Tatham to Edward Weston, January 29th, 1885
  1885-01-29
• [X250ACQ], Letter from William Penn Tatham to George Whiting Hebard, May 28th, 1885
  1885-05-28
• [X250AAD], Letter from William Penn Tatham to Leonard Eager Curtis, October 11th, 1884
  1884-10-11
• [X250AAF], Letter from William Penn Tatham to Edward Weston, October 21st, 1884
  1884-10-21
• [X250AAK], Letter from United States Electric Lighting Co, William Penn Tatham, October 29th, 1884
  1884-10-29