This letterbook covers the period October-November 1889. Most of the correspondence is by Edison and Alfred O. Tate. Included are letters relating to Edison's exhibit at the Paris Exposition and to the development of a new battery for use with his phonoplex system. Some of the correspondence deals with the operations of the Edison Phonograph Toy Manufacturing Co. and the presentation of phonographs to Mexican President Porfirio Diaz and other foreign dignitaries. Other letters pertain to the erection of buildings for the Edison Manufacturing Co. at Silver Lake, N. J. There are also letters to the firm of Dyer & Seely regarding phonograph and electric light patents for Europe, Latin America, and Australia. Also included is correspondence concerning Edison's stock transfers, his philanthropic contributions, and other financial matters. The book contains 500 numbered pages and an index. Approximately 50 percent of the book has been selected. Courtesy of Thomas Edison National Historical Park.