Map of the Battle of the Antietam fought on the 16th and 17th September 1862 between the United States Forces under the Command of Maj. Genl. Geo. B. McClellan and the Confederates under Genl. Robt. E. Lee

Chicago citation style
War Department. Office of the Chief of Engineers. 1818-9/18/1947. Map of the Battle of the Antietam fought on the 16th and 17th September 1862 between the United States Forces under the Command of Maj. Genl. Geo. B. McClellan and the Confederates under Genl. Robt. E. Lee. 1862-10. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/305578. (Accessed June 20, 2018.)
APA citation style
War Department. Office of the Chief of Engineers. 1818-9/18/1947, (1862-10) Map of the Battle of the Antietam fought on the 16th and 17th September 1862 between the United States Forces under the Command of Maj. Genl. Geo. B. McClellan and the Confederates under Genl. Robt. E. Lee. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/305578
MLA citation style
War Department. Office of the Chief of Engineers. 1818-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/305578>.
Note: These citations are programmatically generated and may be incomplete.