http://www.historylearningsite.co.uk/black_death_of_1348_to_1350.htm
http://facts.randomhistory.com/2009/06/09_black-death.html
http://en.wikipedia.org/wiki/Black_Death
http://www.bbc.co.uk/history/british/middle_ages/black_01.shtml
http://www.themiddleages.net/plague.html
http://victoriac1234.edu.glogster.com/the-plague-black-death