This notebook was used by Edison during August 1912. The entries pertain to the electroplating, molding, and pressing processes involved in disc record manufacture. Included are notes and drawings on nineteen consecutively numbered experiments involving electrolytic deposits of copper and nickel. Also included are notes on a modified plating tank used to deposit gold and silver on intermediate "submaster" molds, as well as the details of further experiments on plating and pressing with various metal alloys and varnishes. Edison's notes indicate that Harry R. Grimes, Sherwood T. (Sam) Moore, and Ludwig F. (Louis) Ott assisted with these experiments. The front cover is marked "Electro-Plating Experiments Aug, 1912." The pages are unnumbered. Approximately 35 pages have been used. Courtesy of Thomas Edison National Historical Park.