This folder contains correspondence and other documents relating to Edison's primary and storage batteries. Included are test reports on the Edison-Lalande primary battery produced by the Edison Manufacturing Co.

Approximately 30 percent of the documents have been selected. The following items have not been selected: solicited and unsolicited data regarding electric vehicles, including a copy of a letter from Lord Arthur Balfour; routine letters concerning battery patents or publications about batteries; and documents that duplicate information in selected material.