[1865] From surveys under the direction of Bvt. Brig. Gen. N. Michler, Maj. of Engineers, by command of Bvt. Maj. Genl. A. A. Humphreys, Brig. Genl. & Chief of Engineers. Surveyed & drawn by Maj: J. E. Weyss, assisted by F. Theilkuhl, J. Strasser & G. Tho