Items

• [E1929DB], Letter from Elmer Ellsworth Dougherty to Thomas Alva Edison, Chemical and Metallurgical Engineering, August 6th, 1919
  1919-08-06
• [E1857BI], Memorandum, William Henry Meadowcroft, November 20th, 1918
  1918-11-20
• [E1948AT], Letter from Woolsey McA Johnson to Thomas Alva Edison, May 1st, 1919
  1919-05-01
• [NA347105], Technical Note, Thomas Alva Edison, September 11th, 1920
  1920-09-11
• [SC12027A], Interview, Henry B Clifford, May 7th, 1912
  1912-05-07