The History Channel http://www.history.com
The History Place http://www.historyplace.com
Eyewitness to History http://www.eyewitnesstohistory.com
National Geographic http://www.nationalgeographic.com
PBS http://www.pbs.org
Social Studies for Kids http://socialstudiesforkids.com
MLA Citations http://honolulu.hawaii.edu/legacylib/mlahcc.html