This folder contains correspondence and other documents relating to electric lighting and power. Included are numerous references to Edison's work on electric lighting during the 1870s and 1880s. Among the correspondents are longtime Edison associate William S. Andrews of the General Electric Co. and Malcolm MacLaren of the Electrical Engineering Department at Princeton University.

Less than 10 percent of the documents have been selected, including all items bearing substantive marginalia by Edison. The unselected material consists primarily of unsolicited inquiries and offers that received no answer or only a form reply.