Edu dc tours
Sources
http://www.u-s-history.com/pages/h3299.html
http://www.abrahamlincolnonline.org/lincoln/sites/memorial.htm
http://en.m.wikipedia.org/wiki/Arlington_National_Cemetery
http://www.nps.gov/nr/travel/wash/dc92.htm
http://clinton4.nara.gov/WH/glimpse/WH_Facts/html/facts.html
http://www.nps.gov/mlkm/learn/historyculture/index.htm
http://www.nps.gov/mlkm/learn/historyculture/index.htm