This letterbook covers the period August-November 1913. Most of the correspondence is by Edison and William H. Meadowcroft. Many of the items relate to the commercial and technical development of Edison's alkaline storage battery. There are also letters pertaining to his phonograph and motion picture businesses. Additional correspondence concerns an article about Edison, written and published by Elbert Hubbard in The Fra and Philistine Magazine, and efforts by Mina Miller Edison to stock black bass in the creek near the family's winter home at Fort Myers, Florida. Also included are documents referring to Edison's health, the books in his library, and his summer vacation in Maine, along with reminiscences about his childhood and his career as a telegrapher.

The front cover is marked "T. A. E. From Aug. 6, 1913. To Nov. 11, 1913." The spine is marked with similar information, along with the number "34." The book contains 701 numbered pages and an index. Less than 10 percent of the book has been selected.