A map of Pennsylvania exhibiting not only the improved parts of that Province, but also its extensive frontiers: Laid down from actual surveys and chiefly from the late map of W. Scull published in 1770 . . .
"Longitude west from London." "Published as the Act directs 10 June 1775." Relief shown pictorially. Shows county boundaries. Appears in Thomas Jefferys' The American atlas. 1775.