This pocket notebook was kept by Charles Batchelor during the period February 1878-January 1879. The book contains entries relating to items, primarily telephones and phonographs, that were made at the laboratory and shipped to various companies and individuals. The front cover is inscribed "Work turned out of Edison's Laboratory During 1878." The pages are unnumbered. Only 14 pages have been used.

Courtesy of Thomas Edison National Historical Park.