Map of the Battle of Antietam of the American Civil War. Drawn in Adobe Illustrator CS5 by Hal Jespersen. Graphic source file is available at http://www.posix.com/CWmaps/
This file was derived from: Antietam0900.png:
Antietam0900.png:  Hal Jespersen at en.wikipedia
derivative work: Citypeek