This notebook covers the period May 1881. The entries are by Charles P. Mott. The book contains the results of a search for literature about magnetic lines of force and their relationship to the setting of commutator brushes. The label on the front cover is marked "Lines of Magnetization," "Dynamos," and "C.P. Mott May 14, 81." The book contains 280 numbered pages.
Blank pages: 120-271, 274-279.
Missing page numbers: 5-6. Courtesy of Thomas Edison National Historical Park.