This notebook contains one entry by Charles L. Clarke, dated March 23, 1881. It is titled "Magnet Wires for 5 H.P. Motor at Menlo Park" and includes notes and calculations relating to this motor. The label on the front cover is marked "Magnet Wires" and is stamped "Charles L. Clarke." The book contains 280 numbered pages.

Blank pages: 6-280.

Courtesy of Thomas Edison National Historical Park.