Topographical map, Gettysburg, Antietam / Engineer. Dept., Army Service Schools.United States. Army Service Schools (Fort Leavenworth, Kan.)1913"Reduced from 12 in. WCovers area from Heidlersburg, Pa. to Mayberry, Md.Datum is mean sea level.Imperfect: Mutilated, with some loss of text.In upper right margin: New Oxford sheet.Lower right margin: R 21.Relief shown by contours and spot heights.cartographic