[The following Part II pocket notebook appears in the Supplement Series in Thomas A. Edison Papers: A Selective Microfilm Edition, Part IV (1899-1910). The images for Part IV have not yet been digitized. If the "List Documents" button at the bottom of the note is used, a list of document records associated with this pocket notebook will be displayed. However, no images will be displayed if the "Show Documents" button at the top of the list is used. To see the location of this item in the Series Notes for Part II, use the "Which Series Notes?" button.] This undated pocket notebook was used by Edison, probably during the mid-1880s. It contains notes regarding chemical compounds and their reactions to heat. There are also two drawings and one page of miscellaneous calculations. The pages are unnumbered. Approximately 20 pages have been used. Courtesy of Thomas Edison National Historical Park.