http://www.whitehouse.gov/about/presidents/georgewashington
http://www.georgewashington.si.edu/
http://www.monticello.org/site/jefferson/biography
http://www.whitehouse.gov/about/presidents/thomasjefferson/
Theodore Roosevelt
http://nobelprize.org/nobel_prizes/peace/laureates/1906/roosevelt-bio.html
http://www.whitehouse.gov/about/presidents/theodoreroosevelt
http://sc94.ameslab.gov/tour/alincoln.html
http://www.whitehouse.gov/about/presidents/abrahamlincoln
Mount Rushmore
http://www.mtrushmorenationalmemorial.com/
http://www.nps.gov/moru/index.htm
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