This scrapbook contains only a few dated entries, covering the period May-October 1873. Most of the laboratory notes and drawings are by Edison; some are by Charles Batchelor. They concern telegraphy, particularly chemical and printing, and contain many examples of both printed and chemically treated tape. There are also unused printed forms from several telegraph companies, as well as four pieces of correspondence (one by Edison), a brochure from the Electric Railway Signal Co., a circular from the Galvano-Naradic Manufacturing Co., and a clipping on peripolar induction. The cover is marked \"Y.\"" The book contains 306 numbered pages.

Blank pages: 2, 4, 6, 8, 48-49, 55, 76-78, 80-82, 84-306."