This notebook covers the period May-June 1910. All entries are by Edison. The book contains notes regarding the use of storage batteries for automobiles, streetcars, and railroads. The notes pertain to technical and commercial matters, such as vehicle weight, freight capacity, battery endurance, and cost calculations. Among the automobile and railway companies noted are the Anderson Carriage Co., the Erie Railroad, and the Long Island Railroad. On the last page is a list of salesmen who worked for various Edison companies, together with some battery sales figures. The front cover is marked "Storage Battery Notes 1910." The pages are unnumbered. Approximately 20 pages have been used.