[Environs of Vicksburg, Mississippi, 1863]
Relief shown by hachures. Depths shown by form lines. From the Joseph R. Hawley papers in LC Manuscript Division. LC Civil War maps (2nd ed.) 279 Maps of "Yazoo River defences at Walnut Hills" and "Haines Bluff" autogr. by Hausmann. Available also through the Library of Congress web site as raster image.
United States Coast Survey - Bache, A. D. (Alexander Dallas) - Fendall, C. - Strausz, A. - Hawley, Joseph R. (Joseph Roswell)