Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s04329 (digital file from original item, front) LC-DIG-stereo-2s04329 (digital file from original item, back)
Photograph shows Captain Albert G. Mack's 18th New York artillery behind breastworks engaging Confederates at Port Hudson, Louisiana during the siege in May and June of 1863.
