1885 B/W U. S. Geological and Coast Survey map showing the progress of the survey in the Eastern half of the United States. Shows coastlines, major rivers, triangulation work performed, reconnaisance, surveyed topography, etc. Detailed map, nicely printed on solid paper, very light age toning, no browning, may have some slight eparation at fold corners.
USCGS Sketch of the General Progress, June 30 1885, Eastern Sheet
'United States Coast and Geodetic survey sketch of general progress June 30, 1889 Eastern sheet