South Mountain showing the positions of the forces of the United States and the enemy during the battle fought by the Army of the Potomac under the command of Major General G. B. McClellan, Sept. 14th 1862

Chicago citation style
United States, Army., Corps of Topographical Engineers. South Mountain showing the positions of the forces of the United States and the enemy during the battle fought by the Army of the Potomac under the command of Major General G. B. McClellan, Sept. 14th 1862. 1872. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/9s161c23k. (Accessed July 19, 2018.)
APA citation style
United States, Army., Corps of Topographical Engineers, (1872) South Mountain showing the positions of the forces of the United States and the enemy during the battle fought by the Army of the Potomac under the command of Major General G. B. McClellan, Sept. 14th 1862. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/9s161c23k
MLA citation style
United States, Army., Corps of Topographical Engineers. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/9s161c23k>.
Note: These citations are programmatically generated and may be incomplete.