This small looseleaf binder, which was compiled by or for Frank D. Lewis of the Legal Department, contains information about patent applications. The applicants include Edison, Jonas Walter Aylsworth, Frank L. Dyer, Miller Reese Hutchison, Alexander N. Pierman, and other employees, as well as outside parties under obligation to Edison or to one of his companies. The applications, which cover the period January 1909-November 1912, are grouped according to the following categories: phonograph machines, recorders and reproducers, records, moving pictures, storage battery, cement, electrical, numbering machines, primary battery, compositions, and miscellaneous. Each entry provides the name of the applicant, application date, serial and folio numbers, and a brief summary of the specification. Some of the entries also include a drawing or an indication that the patent was assigned to the Edison Manufacturing Co., Edison Storage Battery Co., New Jersey Patent Co., or Thomas A. Edison, Inc. The pages are unnumbered. Approximately 400 pages have been used.