1876 ORIGINAL GRAY'S US GEOLOGICAL Atlas Map 17 X 28 BY CHARLES H. HITCHCOCK PHD
This is an ORIGINAL 1876 Centennial GRAY'S US GEOLOGICAL BY CHARLES H. HITCHCOCK PHD of Dartmouth college. This Atlas Map by O.W. Gray & Sons, Civil and Topographical Engineer, and printed by M. R. Brown & Co., Philadelphia, PA.