Map of Richmond from the Official Records Atlas, Plate LXXXIX, #2. Prepared in 1864 by A. D. Bache for the U. S. Coast Survey.
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This map is flawed in two places - the locations of the Jefferson Davis House and of Libby Prison are both incorrect. The map itself is copied from an 1853 map of the city entitled "Smith's Map of Henrico County." Whomever prepared the map for the Union army obviously added these Civil War era features, and got them wrong.