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 March 1917. They pertain to Edison's idea of using pencils of light reflected from mirrors as a backup communications system for warships. An additional reference to Edison's mirror reflection system can be found in Report 27.
This project is described on pp. 184-185 of Lloyd N. Scott's Naval Consulting Board of the United States. Courtesy of Charles Hummel.