Information about Pennsylvania:
http://atozkidsstuff.com/pennsylvania.html
http://www.enchantedlearning.com/usa/states/pennsylvania/
http://www.ducksters.com/geography/state.php?State=Pennsylvania
http://www.newworldencyclopedia.org/entry/Pennsylvania
Information about The Liberty Bell:
http://www.socialstudiesforkids.com/articles/ushistory/libertybell.htm
http://funandfactswithkids.blogspot.com/2010/07/liberty-bell-with-kids.html
