1885 B/W U. S. Geological and Coast Survey map showing the Triangulation Between the Maryland and Georgia Base Lines (Southern Part) with Extension Westward and Triangulation in Tennessee. Detailed map, nicely printed on solid paper, very light age toning, no browning, may have some slight separation at fold corners.
USCGS Triangulation Between the Maryland and Georgia Base Lines (Southern Part)
Plate 5, Triangulation Between the Maryland and Georgia Base Lines (Southern Part) with Extension Westward and Triangulation in Tennessee