The dated entries in this pocket notebook cover the period August 1915-January 1916. The book was used by Edison to record ideas about business matters, experiments to be tried, and other tasks to be performed. Some of the entries have been crossed out. Others appear to be clean transcriptions of entries from PN-15-07-27. Many of the experimental notes pertain to chemicals. Also included are notes on battery cell regeneration, disc records, and recording experiments with various arrangements of musicians, instruments, and funnels. Notations regarding a request for a revolver without rifling and for information on submarines, along with references to Adm. Joseph Strauss of the U.S. Navy, indicate the beginning of Edison's work on war-related experiments.
Among the business-related entries are notes on daily output at the benzol plants in Johnstown, Pennsylvania, and Woodward, Alabama. Also included are entries regarding phonograph orders and daily manufacturing schedules. At the end of the book is a notation concerning an agreement of July 22, 1915, with H. H. Meno Kammerhoff, supervisor of operations at Edison's chemical plants in Silver Lake, New Jersey. Other Edison employees mentioned in the book include experimenter Charles T. Dally and chemist Victor L. King. Chemical manufacturers and suppliers mentioned by Edison include Binney & Smith Co., Butterworth-Judson Co., and General Chemical Co. The pages are unnumbered. Approximately 150 pages have been used. Courtesy of Thomas Edison National Historical Park.