From Broad Axe to Chestnut Hill. No 57, E / by Robert Erskine F.R.S. Geogr. A. U.S. and Assistants.

In ink on verso: "No 57 E". In pencil on recto: "57 E". Military topographic map. Covers Montgomery County, Pennsylvania. Shows roads running through Whitemarsh and Springfield toward Chestnut Hill. Also shows buildings and owners' names, landforms and streams. Pen-and-ink, pencil on laid paper. Shows relief by hachures. Soiled, creased and abraded. Ink faded. 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: "TMW" accompanied by dove; similar to Gravell and Miller American watermarks nos. 658 and 659.