Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s04338 (digital file from original item, front) LC-DIG-stereo-2s04338 (digital file from original item, back)
Photograph shows a damaged Confederate gun inside Port Hudson after the surrender in July 1863.
Illustrated in: Davis, William C., Fighting for Time, Vol. IV of The Image of War, 1861-1865. New York: Doubleday & Co., Inc., 1983, p. 68.