National Archives at Philadelphia
Map of the Battlefield of Antietam. On September 17, 1862, the battle was trumpeted over the arsenal explosion in the
newspapers across the nation.
Prepared by Lt. William. H. Willcox, Topographical Officer & A.A.D.C. on Brigadier General Doubledays staff. [Sept. 17,
1862]. LC Civil War Maps (2nd ed.), 253, Courtesy of the Library of Congress.