This folder contains correspondence and other documents relating to the manufacture and sale of Edison storage batteries by Sigmund Bergmann and his Deutsche Edison-Accumulatoren-Co. Included are items pertaining to machinery and material for the batteries, the outfitting of the Bergmann Electrical Works, the finances of the Deutsche Edison-Accumulatoren-Co., and the use of storage batteries in streetcars. Among the correspondents are Frank L. Dyer, vice president of the Edison Storage Battery Co., and O. A. Rogers, who was sent to Berlin to assist Bergmann in preparing machine tools for the improved battery.

Approximately 60 percent of the documents have been selected. The items not selected include letters of transmittal and introduction, minutes of a company board meeting, and documents that duplicate information in selected material.