[ATLASES] GRAY, Ormando Willis. The National Atlas, containing Elaborate Topographical Maps of the United States and the Dominion of Canada. Philadelphia: O.W. Gray & Son, 1876. Folio (440 x 378 mm). 68 hand-colored lithographic maps (many double-page). Original half calf, green cloth (spine perished, worn). Second edition, following the first edition of 1875; the full color maps of each state differentiate counties.