Ben's Guide to the U.S. and Washington D.C. http://bensguide.gpo.gov/
Scholastic http://www.scholastic.com/kids/
Life in the White House http://www.whitehouse.gov/kids/whlife/index.html
How much do you know about Pennsylvania? http://www.netstate.com/states/quiz/pa_quiz.htm
Know Your States!!! http://www.netstate.com/states/index.html
We The People http://www.constitutioncenter.org/explore/forkids/index.shtml
Place the states http://www.history.com/states.do?action=detail&contentType=State_Generic&contentId=54610