This folder contains correspondence and other documents relating to the primary batteries produced by the Edison Manufacturing Co. Most of the items are letters received by William E. Gilmore, vice president and general manager, concerning the manufacture and sale of the batteries and the activities of competitors. Numerous documents pertain to relations with the Western Electric Co. and the Battery Supplies Co.

Approximately 80 percent of the documents have been selected. The items not selected consist of canceled Battery Supplies Co. stock; correspondence arranging business meetings; and a paper by James W. Gladstone, proprietor of the Battery Supplies Co., which he presented at a meeting of the Railway Signal Association.