http://www.loc.gov/exhibits/1492/intro.html
Library of Congress, 1492: Ongoing Voyage (pre- and post-contact America, and the Mediterranean world)
http://memory.loc.gov/ammem/gmdhtml/armhtml/armhome.html
Library of Congress, The American Revolution and Its Era: Maps and Charts of North America and the West Indies, 1750 to 1789
http://international.loc.gov/intldl/awkbhtml/
Library of Congress, The Atlantic World - America and the Netherlands
http://memory.loc.gov/learn/community/cc_wethepeople.php
Library of Congress, We the People (resources for teachers and students)
site map of portal to above sites and others (covers all curriculum areas, may be useful for other committees as well)
http://www.free.ed.gov/sitemap.cfm