38 x 48 cm. Relief shown by hachures and spot heights. "Atlas sheet no. 53(C)." "Issued May 7th 1877." "1st. Lieut. Geo. M. Wheeler, Corps of Engineers, U.S. Army." Prime meridians: Greenwich and Washington, D.C. Includes sectional diagram that shows how atlas sheets fit together. "Weyss, Herman & Lang, del." "Louis Nell, J. J. Young, topographical assistants." "Under the direction of Brig. General A. A. Hunphreys, Chief of Engineers, U. S. Army." "Expeditions of 1873 and 1876 under the command of 1st. Lieutenant William L. Marshall, Corps of Engineers, U. S. Army, 1st Lieutenant Eric Bergland, Corps of Engineers, U. S. Army, Executive Officers and field astronomers." "By order of the honorable the Secretary of War." Original publisher: Graphic Co. photo., Scale: 1 inch to 4 miles or 1:253440.