The dated entries in this pocket notebook are from February-April 1912. The book was used by Edison to record ideas about business matters, experiments to be tried, and other tasks to be performed. Many of the items have been crossed out. Included are notes relating to storage battery tests, country house lighting, phonograph records and reproducers, the home projecting kinetoscope, the kinetophone, rectifiers, and ore concentration. In addition, there are lists of inventions to be patented, along with lists of songs (including some suggested by humorist Walt Mason) and recording artists, The business-related entries include notes about record sales, advertising ideas, legal and patent issues, new companies, dealers, and educational and other films, along with data on costs and salaries.

Among the numerous Edison employees mentioned in the book are assistant engineer John R. Anderson, Jr.; chief engineer Donald M. Bliss; experimenters Charles T. Dally and Alexander N. Pierman; Frank L. Dyer, president of Thomas A. Edison, Inc., and head of the Legal Dept.; chemist Ignacy Goldstein; Walter H. Miller, head of the Recording Dept.; machinist and longtime Edison associate Frederick P. Ott; his nephew, chemist Ludwig F. (Louis) Ott; Brian H. Philpot of the Disc Record Manufacturing Dept.; and machinist Albert F. Wurth. The pages are unnumbered. Approximately 160 pages have been used.