Plan showing the defences of the fort on Red River,

Scale ca. 1:9,600.
LC Civil War Maps (2nd ed.), 234.2
From Report of the Secretary of the Navy, with an appendix, containing reports from officers. December, 1863 (Washington, Government Printing Office, 1863). opp. p. 482.
Map of Confederate Fort De Russy, Louisiana, and vicinity. Original sketch from which this was reproduced was sent to the Secretary of the Navy by Acting Rear Adm. David D. Porter on May 16, 1863.
Description derived from published bibliography.
Available also through the Library of Congress web site as raster image.