In ink on verso: "No. 99 C". In pencil on recto: "No 99 C". Military topographic map; an early draft. Covers Mercer, Burlington and Camden counties in New Jersey, Montgomery County and Philadelphia in Pennsylvania. Pen-and-ink, pencil on laid paper. Soiled, stained, creased 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, both statements of responsibility, date, series title and series numbering also by Erskine, but on separate index sheet filed at head of series. Watermark: crest with pendent initials "G R" Countermark "J Whatman".