Includes note describing positions of Union "mortar flotilla" on April 18-21, 1862. Annotated in pencil on verso: Forts of Jackson/St. Philip, [1863?]. "The Forts from data furnished by the Chief Engineer, U.S. Army." From the Joseph R. Hawley papers in LC Manuscript Division. Oriented with north toward the upper left. LC Civil War maps (2nd ed.) 236 Available also through the Library of Congress Web site as a raster image.
United States Coast Survey; Gerdes, F. H.; Bache, A. D. (Alexander Dallas); Hawley, Joseph R. (Joseph Roswell); Bowen &amp; Co.
1862
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