This folder contains correspondence and other documents relating to the commercial and technical development of Edison's alkaline storage battery. Included are letters concerning the progress of Edison's battery work, the machine tools and materials to be used, and the performance of cells and their possible use in submarines. Also included is a statement of the cash required by the Edison Storage Battery Co. for the months of February and March.

Approximately 80 percent of the documents have been selected. The items not selected consist primarily of price quotations made in response to inquiries by Edison.