Union Officers Colonel John S. Crocker, Lieutenant Colonel Benjamin C. Butler, and Another Unidentified Man of the 93rd New York Volunteer Infantry Regiment Posing in Front of a Tent on the Antietam Battlefield (1862)

Union officers Colonel John S. Crocker, Lieutenant Colonel Benjamin C. Butler, and another unidentified man of the 93rd New York Volunteer Infantry Regiment posing in front of a tent on the Antietam battlefield shortly after the battle there, September 1862. By Alexander Gardner. Animated stereoscopic photographs.

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