Surveyed by the party of F. H. Gerdes, Asst., assigned by A. D. Bache, Supdt., U.S. Coast Survey, to act Gerdes, F. H. CREATED/PUBLISHED [S.l., 1864] NOTES Scale ca. 1:23,500. Indicates Fort Cairo, naval depot, and 'harbor for powder barges' at Mound City, soundings in feet, roads and streets, and vegetation.