Items

• [D8123R], Letter from Francis Robbins Upton to Thomas Alva Edison, March 7th, 1881
  1881-03-07
• [D9045ABH], Letter from Walter Seeley Mallory to Thomas Alva Edison, August 7th, 1890
  1890-08-07
• [LM205690], Letter from William S Perry to Charles Batchelor, March 17th, 1892
  1892-03-17
• [X154B3AA], Letter from Charles E Bailey to Charles Augustus Cheever, August 13th, 1878
  1878-08-13
• [X154B3C560], Report from Edison Speaking Phonograph Co, March 1879
  1879-03-00
• [X154B3C686], Report from Edison Speaking Phonograph Co, June 1879
  1879-06-00