McPherson and Oliver 1863, July - 1865 Approach to Reb. [i.e. Rebel] works on right flank at Port Hudson
Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s04318 (digital file from original item, front) LC-DIG-stereo-2s04318 (digital file from original item, back)
Photograph shows Confederate fortifications after the siege in 1863.