This pocket notebook was begun by Edison on August 16, 1888, and was used for notes and drawings relating to cylinder and disc phonographs, wax cylinders, and recording styli. There are also many notes on lamp filaments, ore milling, and aluminum manufacturing. The front cover is stamped "A Pad for a Penny." The pages are unnumbered, and much of the book is damaged. Approximately 40 pages have been used.
Note: The images in this pocket notebook are quite small. They can be enlarged to a more readable size by using the "image zoom" feature of the Firefox browser. Click here to download the Firefox "image zoom" add-on. Right-click on the image to enlarge. Courtesy of Thomas Edison National Historical Park.