File:Ft St Leon 1817.jpg

Fort St Leon 1817 Plan, public domain USACE, Gilmore, Kathleen and Noble, Vergil E., Archeological Testing at Fort St. Leon (16PL35), Plaquemines Parish, Louisiana. May 1983, New Orleans District, Corps of Engineers, Contract No. DACW29-81-C-01ll, Contractor: Institute of Applied Sciences North Texas State University, 337 pages, Pdf