This letterbook covers the period January-April 1889. Most of the correspondence is by Edison and Alfred O. Tate. Many of the letters relate to the marketing of the phonograph in Europe, Latin America, and Asia. Other material pertains to the production of the perfected phonograph at West Orange, the marketing of the talking doll, the establishment of central stations in the United Kingdom and Germany, the Edison phonoplex system, and the Edison exhibit at the 1889 Paris Exposition. There are also letters concerning Edison's efforts to obtain British patents for his ore separator and to acquire manufacturing rights to the Lalande battery. The spine is labeled "From Jan 30, 1889 To April 8, 1889 No I." and "Letterbook 1889 Jan. 30 to April 8 G." The book contains 1,002 numbered pages and an index. Approximately 40 percent of the book has been selected.