This pocket notebook was used by Edison, possibly in 1887 or 1888, for notes on chemical experiments and on the phonograph. Also included is a loose page from a similar notebook containing chemical notes. The pages are unnumbered. Only 5 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.