Public domain
Keedysville, Maryland (vicinity). Smith's barn, used as a hospital after the battle of Antietam
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineKeedysville, Maryland (vicinity). Smith's barn, used as a hospital after the battle of Antietam. 1862. Gardner, Alexander. Civil War Glass Negatives, Library of Congress. Public domain.