Items

• [D9059AAE], Letter from R F Cromelin, Columbia Phonograph Co to James Ogilvie Clephane, June 30th, 1890
  1890-06-30
• [D9152AAO], Letter from Columbia Phonograph Co, R F Cromelin to Edison General Electric Co, Samuel Insull, September 25th, 1891
  1891-09-25
• [D9436AAD1], Letter from Columbia Phonograph Co, R F Cromelin to United States Phonograph Co (Newark), October 20th, 1894
  1894-10-20