A topographical description of such parts of North America as are contained in the (annexed) map of the middle British colonies, &c. in North America. vi, 46, 16p.;Includes text, list of townships, distance charts, and inset "A sketch of the remaining part of Ohio R. &c."; London and Philadelphia.;Relief shown pictorially.;hand colored;49 x 83 cm.;ca. 1:2,300,000