This notebook contains notes, drawings, specifications, and price lists for telegraph equipment and component parts. Most of the entries are in the hand of Charles Batchelor. The dated entries are for March and April 1873. Much of the material is related to the manufacture of universal printers and stock tickers. Near the end of the book is a list labeled "Instruments that we lost," with the word "money" immediately above. The front cover is marked "Price Lists." Approximately 30 pages of this unnumbered book have been used. Courtesy of Thomas Edison National Historical Park.