Biographies of United States Presidents from 1789 to the present. http://www.whitehouse.gov/history/presidents/
The AP College Board http://www.apcentral.collegeboard.com
Regents Exam Review http://www.regentsprep.org
Top Speeches in American History http://www.americanrhetoric.com/top100speechesbydecade.html
The Library of Congress http://www.loc.gov/
The Lower East Side Tenement Museum http://www.tenement.org/
Political Cartoons http://www.politicalcartoons.com/
The Enduring Vision Text Website http://www.college.hmco.com/history/us/boyer/enduring_vision/5e/students/ace.html
United States History Webquests http://webquest.org/
American Memory Historical Collections http://memory.loc.gov/ammem/
Picturing Modern America 1880-1920 "Historical Thinking Exercises" http://www.edc.org/CCT/PMA/