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 a duplicate copy of Edison's letter of January 21, 1918, filed in Report 46, in which he expresses his opinion that zigzagging is an ineffective method of submarine evasion for ships moving less than ten knots.
This project is described on p. 180 of Lloyd N. Scott's Naval Consulting Board of the United States. Courtesy of Charles Hummel.