This collection consists primarily of letters exchanged between Edison and Secretary of the Navy Josephus Daniels, along with related correspondence. Many of the typewritten letters are accompanied by drafts in Edison's hand. The documents in this folder are from February and July 1917. They pertain to Edison's work on a method to preserve submarine guns from rust. Included is a photograph that probably relates to these experiments.
This project is described on p. 192 of Lloyd N. Scott's Naval Consulting Board of the United States.
[X128C08A], Letter from Thomas Alva Edison to Josephus Daniels, February 22nd, 1917 1917-02-22
[X128C08B], Letter from Josephus Daniels to Thomas Alva Edison, February 26th, 1917 1917-02-26
[X128C08C], Letter from Thomas Alva Edison to Josephus Daniels, July 9th, 1917 1917-07-09