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James F. Gibson
Union fortifications, Yorktown, Va.
[The War for the Union. Photographic War History, 1861-1865.]
1862, May (taken, later print)
Library of Congress, Prints and Photographs Division
Reproduction Number: LC-DIG-stereo-1s02546 (digital file from original stereograph, front) LC-DIG-stereo-2s02546 (digital file from original stereograph, back)
Stereograph shows Union soldiers mounting 13 inch mortars in Federal Battery No. 4 along the line in Yorktown, Virginia.