In pencil on recto: "No 81". Military topographic map. Covers Bergen, Essex, Hunterdon, Morris, Somerset, Warren and Union counties in New Jersey. Shows roads, buildings and owners’ names, also landforms and streams. Pen-and-ink, pencil on laid paper. Shows relief by hachures. Stained, soiled, frayed and abraded. Mounted on cloth, bound and cropped, disbound and silked by subsequent owners. Cleaned after removal of backings 1999; some fill remains. Sheathed in mylar. Title proper from recto is the work of a later editor--Simeon DeWitt or his assign--subsequent to 1820. Index title, statement of responsibility, date, series title and series numbering by Erskine, but on separate index sheet filed at head of series. Watermark: "CC" beneath crown; the second C is reversed and interlocked with the first. No similar mark is in Gravell and Miller.