(L-R): Maj. Allan Pinkerton, US Pres. Abraham Lincoln (wearing his trademark stovepipe hat) & Gen. John A. McClernand, in front of pitched tent on battlefield while Civil War is taking place. Antiem, Maryland. October 1862.
The "Saint Louis," first ironclad gunboat built in America, during Civil War. 1862.
Heavily fortified Confederate lines along front nr. Chattanooga Railroad, showing Potter's House, during Civil War. Atlanta, Georgia. 1864. Rear view of former slave revealing scars on his back from savage whipping, in photo taken after he escaped to become Union soldier during Civil War. 1863. Wounded Zouave soldier sitting on ground w. arm in sling as young black man assists him, in front of half-constructed log shelters, during Civil War. 1861. Meadow strewn with Confederate dead photographed by Alexander Gardner 2 days after fighting had ceased during bloodiest battle of Civil War. Gettysburg, PA. 1863.