File:Ft St Leon 1747–V2.jpg

Plan of the North Fort at English Turn, 9 Apr 1749 by DeBatz, LOC Map Division, 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