History of Washington D.C.:
http://www.history.com/topics/us-states/washington-dc
http://www.city-data.com/us-cities/The-South/Washington-D-C-Geography-and-Climate.html
http://www.ipl.org/div/stateknow/dc1.html
Information About Nation's Capital:
http://kids.clerk.house.gov/grade-school/lesson.html?intID=33
http://www.kidsdiscover.com/shop/issues/washington-dc-for-kids/
