This pocket notebook was used by Edison in 1899 or the early 1900s for lists of tasks to be undertaken. Included are notes relating to the supervision of experiments, to plant operations and outfit, and to other business matters. Among the activities listed or described are battery experiments, meter experiments, and work pertaining to magnetic ores, gold ore, and limestone. Also included are rough survey notes made by Edison at the Cahart property in Stewartsville, New Jersey, where limestone was later quarried for the Edison Portland Cement Co. The front cover is stamped "Pass Book" and is marked "file Sketch" in Edison's hand. The book contains 77 numbered pages, most of which are blank, followed by one unnumbered page.
Courtesy of Thomas Edison National Historical Park.