Items

• [E1952AL], Letter from U.S. Signal Corps, Charles E Coates to Thomas Alva Edison, May 2nd, 1919
  1919-05-02
• [MF50AC], Letter from U.S. Signal Corps, Charles E Coates to Thomas Alva Edison, William Henry Meadowcroft, February 27th, 1919
  1919-02-27