Atlapedia Online
   Contains full color physical and political maps as well as key facts and statistics on countries of the world.
   http://www.atlapedia.com/

Atlas of the Biosphere
   A collection of maps, schematics, and information about human-environment interactions, directed at the education community.
   http://www.sage.wisc.edu/atlas/

CIA World Factbook - Reference Maps
   Various maps of the world in both jpeg and pdf format that are updated annually.
   http://www.cia.gov/cia/publications/factbook/docs/refmaps.html

Cornell's Digital Earth
   Use this interactive atlas to create maps displaying land, oceans, borders, roads, lakes, rivers, roads, railroads, faults, mines, seismic, and other geological, geographical, and geophysical data.
   http://atlas.geo.cornell.edu/webmap/

Expedia Maps
   Offers searchable listing in the United States and Europe by address and driving directions.
   http://maps.expedia.com/

Google Maps
   Provides directions and interactive maps of the United States. Can also search by keyword such as type of business.
   http://maps.google.com/

Great Circle Mapper
   Shows great circle path between specified points on the globe with an aviation focus.
   http://gc.kls2.com/

MapQuest
   Find directions for and explore towns and cities worldwide. Display addresses on a map, view nearby businesses, get driving directions and maps, and plan a trip with city information. Also includes aerial photographs of selected areas.
   http://www.mapquest.com/

Maps of World
   Online maps showing countries of the world and continents. Too wide for smaller monitors.
   http://www.mapsofworld.com/

Multimap
   Global mapping service including street maps of Europe, North America and Australia.
   http://www.multimap.com/

Rand McNally
   Online maps, driving directions, and travel store.
   http://www.randmcnally.com/

Readmap Project
   Online maps collection with political and economical overview of each country.
   http://www.readmap.com/

TerraFly
   Searchable aerial views of cities and towns in the United States.
   http://www.terrafly.com/

TerraServer
   View maps and aerial photos of various parts of the Earth.
   http://terraserver.microsoft.com/

United Nations: Cartographic Section
   General country and special issues maps.
   http://www.un.org/Depts/Cartographic/english/htmain.htm