The Line between Pennsylvania & Maryland. No 127 / by Robert Erskine F.R.S. Geogr. A. U.S. and Assistants.

Date of situation ca. 1772--cf. Hindle- Brooke. David Rittenhouse. Princeton: 1964- p. 92ff. In pencil on recto: "No 127". Military topographic map. Map also shows that Fort Pitt is within the western boundary of Pennsylvania. Shows landforms and streams intersecting the southern but not the western border. Pen-and-ink- pencil on laid paper. Shows relief by hachures. Soiled- 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. Title from verso is contemporaneous with map and may be cited as such. Index title from separate index sheet filed at head of series is also contemporaneous. This entry was transcribed by Heusser and is still legible under longwave ultraviolet light. Statement of responsibility- series title and series numbering from the same index. Watermark: "J WHATMAN". References: Heusser- Albert H. George Washington's map maker- p. 249-256.