The CIA's "The World Factbook" : http://www.odci.gov/cia/publications/factbook/index.html

             Travel Warnings : http://travel.state.gov/travel/warnings.html

Government Passport Regulations : http://www.travel.state.gov/passport/passport_1738.html

Traveler's Health : http://www.cdc.gov/travel/    

                  Maps : http://www.mapquest.com

Rebates  :