Electronic Encyclopedias:

http://encarta.msn.com

http://www.encyclopedia.com

http://www.britannica.com

http://auth.grolier.com

Electronic atlases and mapping tools:

http://www.graphicmaps.com

http://www.nationalatlas.gov/

http://www.siteatlas.com/Atlas/PolAtlas/polatlas.htm

http://www.anzwers.org/free/universe

http://www.worldatlas2000.com

Electronic Dictionaries and Thesauruses

http://www.webopedia.com

http://www.m-w.com/dictionary.htm

http://dictionary.reference.com

http://thesaurus.reference.com/

Almanacs

Http://www.almanac.com/

http://www.worldalmanacforkids.com/

http://www.nationbynation.com/