Alexander Gardner, Photograph of the field at Antietam, Dead by a fence at the Hagerstown Turnpike, looking north; the Turnpike is to the right of the fence, the dirt lane on the left leads to the farm of David Miller, Washington, D.C., From the Library of Congress’ American Memory collection; original location: http://memory.loc.gov/ndlpcoop/nhnycw/ad/ad18/ad18045v.jpg, Public Domain via Wikimedia Commons.

Alexander Gardner, Photograph of the field at Antietam, Dead by a fence at the Hagerstown Turnpike, looking north; the Turnpike is to the right of the fence, the dirt lane on the left leads to the farm of David Miller, Washington, D.C.