Items

• [CM05AN], Questionnaire, Stephen Babcock Mambert, December 31st, 1917
  1917-12-31
• [E1336BT], Questionnaire, Thomas Alva Edison, 1913
  1913-00-00
• [E1415AJ], Questionnaire, Peter Bacigalupi, 1914
  1914-00-00
• [E1438CK], Questionnaire, 1914
  1914-00-00
• [E1616ABF], Questionnaire, Thomas Alva Edison, Heinrich H Meno Kammerhoff, January 1916
  1916-01-00
• [E1929DH], Questionnaire, William J Gross, August 20th, 1919
  1919-08-20
• [E1929FZ], Questionnaire, Thomas Alva Edison, November 29th, 1919
  1919-11-29
• [E1929GH], Questionnaire, George W Speirs, December 16th, 1919
  1919-12-16
• [E1972AB1], Questionnaire, Thomas Alva Edison, William Henry Meadowcroft, September 10th, 1919
  1919-09-10
• [X400A5B], Questionnaire, Madeleine Edison, September 28th, 1937
  1937-09-28
• [X400A6BE] Questionnaire, Madeleine Edison, Undated