Second derivative, Jefferys' ed. of Evans' 1755 map; Jefferys transforms it into a timely depiction of the theatre of the French and Indian War, including "Ft du Quesne destroy'd 1758" (Pittsburg), English attack on Fort Carillon (Ticonderoga) & etc
Relief shown pictorially
Shows "West longitude from London" and "from Philadelphia."
Scale ca. 1:2,250,000
Inset map: A sketch of the remaining part of Ohio R. &c