Items

• [E1518IEB] [Miscellaneous], September 1919
  1919-09-00
• [E1537AV], Letter from Charles Ferdinand Roth, National Exposition of Chemical Industries to Thomas Alva Edison, August 12th, 1915
  1915-08-12
• [E1537AW], Letter from Charles Ferdinand Roth, National Exposition of Chemical Industries to Thomas Alva Edison, August 20th, 1915
  1915-08-20
• [E1537AZ], Letter from National Exposition of Chemical Industries, Charles Ferdinand Roth to Thomas Alva Edison, September 3rd, 1915
  1915-09-03
• [E1537BF], List, National Exposition of Chemical Industries, September 20th, 1915
  1915-09-20
• [E1637AF], Letter from National Exposition of Chemical Industries, Charles Ferdinand Roth to Thomas Alva Edison, William Henry Meadowcroft, June 19th, 1916
  1916-06-19
• [E1637AG], Letter from Charles Ferdinand Roth, National Exposition of Chemical Industries to Thomas Alva Edison, William Henry Meadowcroft, July 20th, 1916
  1916-07-20
• [E1637AI], Letter from Charles Ferdinand Roth, National Exposition of Chemical Industries to William Henry Meadowcroft, Thomas Alva Edison, October 5th, 1916
  1916-10-05
• [E1658BD], Letter from National Exposition of Chemical Industries, Adriaan Nagelvoort to Thomas Alva Edison, July 6th, 1916
  1916-07-06
• [HM55BW], Letter from Charles Ferdinand Roth, National Exposition of Chemical Industries to William Henry Meadowcroft, October 13th, 1916
  1916-10-13