http://en.wikipedia.org/wiki/Fort_Massachusetts_(Mississippi) (http://en.wikipedia.org/wiki/Fort_Massachusetts_(Mississippi))
http://www.nps.gov/guis/historyculture/fort-massachusetts.htm (http://www.nps.gov/guis/historyculture/fort-massachusetts.htm)
http://www.nps.gov/archive/guis/extended/MIS/MHistory/Forts.htm (http://www.nps.gov/archive/guis/extended/MIS/MHistory/Forts.htm)
http://www.mycivilwar.com/pow/ms-fort_massachusetts.htm (http://www.mycivilwar.com/pow/ms-fort_massachusetts.htm)