Statistics for occurrence #1 of “Washington” in chapter 6 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:
...icut Heavy Artillery served in the two big sieges of the Army of the Potomac, Yorktown, April and May, 1862, and Petersburg, June, 1864 to April, 1865. Fort Richardson lay on the Virginia line of the Washington defenses about halfway between Fort Corcoran and Fort Ellsworth, in front of Alexandria.
Its smooth-bore armament consisted of three 24-pounders on siege carriages en barbette, two 24-pounders on b...
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