From a posting on MetaFilter comes this awesome collection of Civil War photographs, including shots of Lincoln visiting the battlefield in Antietam (and standing alongside Allen Pinkerton, founder of the first Secret Service), slave laborers collecting bones from exposed graves, an embalmer working on a fallen soldier, and sailors taking a break on the deck of the ironclad USS Monitor. I could spend hours browsing through these; it’s cool to think how difficult photography was in the 1860s, and as a result, how notable each of these images is today.

(The same MetaFilter thread also dug up a Library of Congress database of selected Civil War photos, further satisfying the appetite.)