This notebook contains two undated entries by Edison—a drawing of cylinder phonograph recording or reproducing apparatus and a list of various oils, alcohols, and acids. The entries were probably made in June 1914. Also included is a table, probably prepared by William H. Meadowcroft, of six disc record selections, with data on the number of records ordered and reordered during the period June-August 1914. A final entry by an unidentified experimenter lists four lots of chemicals. The pages are unnumbered. Only five pages have been used.

Only the Edison entries have been selected

Courtesy of Thomas Edison National Historical Park.