Cartographic
Surveys Done for His Excy General Washington : 1778 & 1779 / by Robt Erskine F.R.S. Geogr to the Army & Assistants
Military topographic map; not listed in Heusser nor Guthorn. Covers the counties of Orange and Rockland in New York and of Passaic- Bergen- Hudson and Essex in New Jersey. Shows some roads; map appears to be incomplete in this respect as of date given. Also shows some buildings and owners' names- landforms and streams. Shows relief by hachures. Title proper and statement of responsibility from recto is original. Titles on verso are later. Date by cataloger- based on comparison to Erskine's dated sketch- "Mensurations on the Ice". Pen-and-ink- pencil on laid paper.
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