After publication of the book, Chesterfield Township Heritage, for which he took and provided many of the photos, Mr. Knowles collected more information that he described as a "supplement." In it he kept track of the houses destroyed since 1964; took more photos and saved copies of older photos of buildings and people; and saved smaller newspaper clippings, business cards and notices, and especially obituaries. Folder 2 contains a section on North Crosswicks.