This pocket notebook contains dated entries from September and October 1907. It was used by Edison for notes and lists regarding experimental work and other tasks to be performed at the laboratory. Among the experiments listed or described are many dealing with alkaline storage batteries and phonographs. Other entries pertain to electromotographs, rectifiers, telephones, telegraphs, and thermocouples. Also included is a suggestion about using magnetic markers on films and records to start moving pictures and sounds simultaneously on the kinetophone. Among the employees mentioned in relation to individual experiments are Ralph Arbogast, Thomas D. Greenley, Otto Groethe, Walter E. Holland, and Albert F. Wurth. The non- experimental entries include reminders about patents, popular music, and product names, along with notations regarding the authorized biography of Edison by T. Commerford Martin, Frank L. Dyer, and William H. Meadowcroft. The pages are unnumbered. Approximately 100 pages have been used.
Courtesy of Thomas Edison National Historical Park.