Mt. Marcy, New York quadrant circa 1894 US Geological Survey topographical folding map on Linen. Meant to be carried while traveling, the linen backing enabled folding to pocket size. We have a number of these for various quadrents, age toning and discoloration to linen backing. Unframed, 4.5" x 6" folded, 13" x 18" unfolded.