This letterbook covers the period May-June 1916. Most of the correspondence is by Edison and William H. Meadowcroft. Included is correspondence pertaining to Edison's benzol absorbing plants and other chemical manufacturing interests. Some of the letters deal with the commercial development of phonographs and motion pictures. There are also items relating to the upcoming presidential election, including letters to Guy Emerson of the Roosevelt Non-Partisan League in which Edison endorses Theodore Roosevelt as "the only man that should be considered" and agrees to serve on the League's Advisory Board. A letter to artist Jacques Reich concerns a portrait of Mina Miller Edison. Other correspondents include Arthur E. Kennelly, former chief electrician at the West Orange laboratory, and representatives of Mitsui & Co. and Vickers, Ltd.
The spine is stamped "Letters" and is marked "T.A.E. From May 3 1916 To June 30, 1916." The number "50" also appears on the spine. The book contains 700 numbered pages and an index. Approximately 15 percent of the book has been selected. Courtesy of Thomas Edison National Historical Park.