Items

• [E1518LDA1], Letter from Thomas Alva Edison to James Henry Plummer, Toronto Chemical Co, December 29th, 1915
  1915-12-29
• [E1518EAG], Letter from Thomas Alva Edison to James Henry Plummer, Toronto Chemical Co, May 4th, 1915
  1915-05-04
• [E1518EDL], Letter from William Henry Meadowcroft to J C McMillan, Toronto Chemical Co, May 27th, 1915
  1915-05-27
• [E1616BCH], Letter from Thomas Alva Edison to Toronto Chemical Co, February 28th, 1916
  1916-02-28