President Lincoln, Major Allen Pinkerton and Gen. McClernard, Antietam, October, 1862

Chicago citation style
Gardner, Alexander, 1821-1882. President Lincoln, Major Allen Pinkerton and Gen. McClernard, Antietam, October, 1862. no date. Retrieved from the Digital Public Library of America, http://contentdm.acpl.lib.in.us/cdm/ref/collection/p15155coll1/id/2149. (Accessed July 23, 2018.)
APA citation style
Gardner, Alexander, 1821-1882, (no date) President Lincoln, Major Allen Pinkerton and Gen. McClernard, Antietam, October, 1862. Retrieved from the Digital Public Library of America, http://contentdm.acpl.lib.in.us/cdm/ref/collection/p15155coll1/id/2149
MLA citation style
Gardner, Alexander, 1821-1882. Retrieved from the Digital Public Library of America <http://contentdm.acpl.lib.in.us/cdm/ref/collection/p15155coll1/id/2149>.
Note: These citations are programmatically generated and may be incomplete.