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 one item in this folder is from May 2, 1917. It pertains to Edison's work on a process for converting nitrogen from the air into nitric acid for use in the manufacture of explosives.
This project is described on pp. 181-182 of Lloyd N. Scott's Naval Consulting Board of the United States. Courtesy of Charles Hummel.