Items

• [CA045A3], Letter from Electrical Testing Laboratories, Wilson Stout Howell to Edison Business Phonograph Co, September 24th, 1908
  1908-09-24
• [D0837AAC], Letter from Ruth Coffin to Edison Business Phonograph Co, March 16th, 1908
  1908-03-16
• [D0837AAG], Letter from Electrical Testing Laboratories, Wilson Stout Howell to Edison Business Phonograph Co, September 24th, 1908
  1908-09-24