Items

• [NB207094], Technical Note, William Walter Dinwiddie, January 1919
  1919-01-00
• [NB207102], Technical Note, Thomas Alva Edison, William Walter Dinwiddie, January 16th, 1919
  1919-01-16
• [NP093120], List, Thomas Alva Edison, November 1912
  1912-11-00
• [NP094010], Diary, Thomas Alva Edison, November 1912
  1912-11-00