File:Fort Desperate Topo Map.jpg

Fort Desperate Topo Map, public domain, Map of Port Hudson and vicinity Prepared by order of Major General N. P. Banks under the direction of Major D. C. Houston, Chief Engineer, Department of the Gulf and Captain Peter C. Hains, Corps of Engr's. 1864. Published by authority of the Hon. the Secretary of War., Office of the Chief of Engineers, U.S. Army 1875. Library of Congress, Captain Peter C. Hains http://hdl.loc.gov/loc.gmd/g4014p.cw0238000