A map of the land abt. Red Stone and Fort Pitt,

Scale ca. 1:600,000.
Title from verso.
Manuscript, pen-and-ink.
Relief shown pictorially.
The title, land tract boundaries with owners' initials, and some place names have been identified as annotations by George Washington made ca. 1780. The author and date of the manuscript map is not known; reference sources indicate between 1758 and 1771.
Phillips. Maps of America p. 713
LC Maps of North America, 1750-1789, 1332
Shows Ohio River watershed in Pennsylvania and West Virginia.
Available also through the Library of Congress Web site as a raster image.
Vault
AACR2: 100; 440/1; 651/1; 651/2; 651/3; 651/4; 651/6; 700/1