This pocket notebook was used by Charles Batchelor. The dated entries cover the period March 1888-January 1890 and relate to toy phonographs and to recording styli for phonographs. The front cover is inscribed "Toy Phono." The pages are unnumbered, and the book has been used in both directions. 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.