Countries
CIA World Fact Book
Maps of the world
From the library of the University of Texas collection
National Geographic Maps
Nationmaster
Compare information from countries in CIA factbook
United Nations: country at a glance
United Nation: Infonation
Compare information about up to 6 countries at a time. Try the advanced version, also available at the site.
WorldBook Online
Free access to the subscription encyclopedia. Need password & userID for off-site use.