Items

• [E1929FP], Letter from Thomas Alva Edison, William Henry Meadowcroft to Electrical Review and Western Electrician, Engineering News, Iron Age, Electrical World, American Machinist, Machinery (Magazine), Industrial Management, Scientific American, American Society of
  1919-10-29
• [E1929GA], Letter from S W Avis to Machinery (Magazine), Thomas Alva Edison, December 1st, 1919
  1919-12-01
• [E1929GG], Letter from George W Speirs to Machinery (Magazine), Thomas Alva Edison, December 8th, 1919
  1919-12-08