This folder contains correspondence from inventors and others asking for Edison's advice on technical matters or his assistance in improving or promoting inventions. Included is a draft response in Edison's hand concerning the use of respirators by workers in his factories. Also included are references to the Naval Consulting Board and letters about war-related inventions similar to the unsolicited correspondence in the Naval Consulting Board and Wartime Research Papers, Special Collections Series. The correspondents include Charles E. Adams, director of the Hector Observatory in New Zealand.

Less than 5 percent of the documents, including all items bearing substantive marginalia by Edison, have been selected.