This letterbook covers the period March-May 1913. Most of the correspondence is by Edison and William H. Meadowcroft. Included are letters addressed to retailer Julius Rosenwald and celluloid manufacturer Marshall C. Lefferts, as well as to Edison's European associates Paul H. Cromelin and John F. Monnot. Some of the items relate to the commercial and technical development of Edison's phonograph business, including the introduction of his disc phonograph, competition with the Victor Talking Machine Co., and the selection of music and recording artists. Additional documents concern the censorship of motion pictures, the promotion of Edison's kinetophone, and visitors to Edison's laboratory, including school children who were injured while witnessing a demonstration of x-rays.

The front cover is marked "T. A. E. From March, 6, 1913. To May 13, 1913." The spine is marked with similar information, along with the number "32." The book contains 699 numbered pages and an index. Approximately 10 percent of the book has been selected.