This letterbook covers the period August 1893-March 1894. Most of the correspondence is by Edison and Alfred O. Tate. Many of the letters deal with the business of the Edison Manufacturing Co. There are also numerous letters relating to the affairs of the Edison Phonograph Works and various other phonograph companies. Other letters pertain to mining and ore milling, the kinetograph, the mimeograph, electric traction systems, and the phonoplex system. Some of the correspondence concerns Edison's personal finances and his relations with the General Electric Co. There are also letters to and about members of Edison's family. Beginning on page 576 is a list of officers and directors of the Edison Electric Light Co. of Europe, the Automatic Phonograph Exhibition Co., the Edison Phonograph Works, and the North American Phonograph Co. The front cover is marked "1893." The book contains 702 pages. There is no index. Approximately 10 percent of the book has been selected. Related documents for this time period can be found in LB-053 and LB-059. Courtesy of Thomas Edison National Historical Park.