This folder contains correspondence and other documents relating to the design and operation of automobiles and the use of storage batteries in electric vehicles. Included are letters to and from Levi C. Weir of the Adams Express Co. and William G. Bee of the Edison Storage Battery Co., along with a series of charts detailing the use of batteries in vehicles belonging to Edison, his family, and other individuals and companies. Documents pertaining to Edison's personal automobiles include correspondence with Cryder & Co., importer of Edison's Mors car, as well as instructions given to Edison's chauffeur at Glenmont.

Approximately 40 percent of the documents have been selected. The items not selected include correspondence regarding orders, automobile parts, and motor vehicle registration; letters offering automobiles or parts for sale; and items that duplicate information in selected material.