Items

• [D9051AAY], Letter from Sherburne Blake Eaton to Thomas Alva Edison, March 28th, 1890
  1890-03-28
• [D9051AAZ], Letter from Sherburne Blake Eaton to Thomas Alva Edison, March 31st, 1890
  1890-03-31
• [D9104AAQ], Letter from Frank R Colvin, Electrical Engineer to Thomas Alva Edison, June 24th, 1891
  1891-06-24
• [D9104AAS], Letter from Frank R Colvin, Electrical Engineer to Alfred Ord Tate, July 1st, 1891
  1891-07-01
• [D9104AAX], Letter from Electrical Engineer, Frank R Colvin to Thomas Alva Edison, August 17th, 1891
  1891-08-17
• [LB050157], Letter from Alfred Ord Tate to Electrical Engineer, Frank R Colvin, June 26th, 1891
  1891-06-26
• [LB050607], Letter from Alfred Ord Tate to North American Phonograph Co, Thomas R Lombard, August 18th, 1891
  1891-08-18
• [LB050657], Letter from Alfred Ord Tate to Electrical Engineer, Frank R Colvin, August 19th, 1891
  1891-08-19