This notebook, which covers the period February-May 1882, is the first of four notebooks used to record tests of zinc electric meters at the Edison Machine Works in New York City. One entry is signed by Harry W. Burnet. The authors of the other entries are unidentified. At the beginning of the book is a notation by Clarke from 1936 indicating that the four books are "page by page copies from like note-books of the testing room at the Edison Machine Works, Goerck St., New York City." The label on the front cover is inscribed "Electric Light Meter 1" and "Electrical Experiments and Tests on Zinc, Zulphate of Zinc &c." The book contains 94 numbered pages preceded by two pages inscribed "a" and "b."

Courtesy of the Henry Ford Museum and Greenfield Village Research Center.