Relief shown by hachures. Oriented with North to upper left-hand corner. "Compiled under the direction of Lieut. Col. J.N. Macomb A.D.C. Chf. Topl. Engr. for the use of Maj. Gen. Geo. B. McClellan commanding Army of Potomac." "Drawn from R.P. Smith's map by E. Hergesheimer. Photographs by G. Mathiot & D. Hinkle by permission of Prof. A.D. Bache Supt. U.S. Coast Survey." 1 map : mounted on linen ; 36 x 35 cm This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library.