"Bloomsbury Research Centre
"...is a FREE on-line database of reference books. Over 17,000 entries are cross-referenced providing a wealth of information all linked and all fully indexed. Use our search engine to search on a wide range of subjects including literature, art, myth, human thought, quotations and a thesaurus or browse through each book at your leisure."Britannica.com
As of 07/2001 only paid subscribers can access the full content of Encyclopedia Britannica.The Canadian Encyclopedia OnlineColumbia Encyclopedia
6th ed., 2000
From Bartleby.comThe Columbia Gazetteer of North America
"With 50,000 entries, this most comprehensive encyclopedia of geographical places and features will prove invaluable to anyone for whom places hold fascination and who require accurate data about them. It covers every incorporated place and county in the United States, along with several thousand unincorporated places, special-purpose sites, and physical features, as well as Canada, Mexico and the Caribbean."
Edited by Saul B. Cohen
Originally published by Columbia University Press, 2000 this online edition by Bartleby.com, 2001.E-Conflict World Encyclopedia
"There are hundreds of pages including information on world history, weather,
governments, economies, people, etc. You can view maps, flags or listen to
national anthems."Encarta OnlineEncyclopedia Britannica - The 1911 Edition
"The best encyclopedia ever written was published nearly 90 years ago! And now you can find right here on the web! This 1911 edition of the Encyclopedia Britannica is filled with historical information that is still relevant today. It fills 29 volumes and contains over 44 million words. The articles are written by more than 1500 authors within their various fields of expertise. As a research tool, this 1911 encyclopedia edition is unparalleled-- even today." Encyclopedia Smithsonian
"The following preprints and links to Smithsonian Web sites have been compiled to answer frequently asked questions and provide research guidance."Encyclopedia.com
Free  access to more than 17,000 articles from The Concise Columbia Electronic Encyclopedia, Third EditionGuinness World RecordsThe New Dictionary of Cultural Literacy
By E.D. Hirsch, Jr., Joseph F. Kett, James Trefil
3rd ed.: Completely Revised and Updated, 2002.
Published 2003 by Bartleby.comOld Farmer's AlmanacOne World - Nations Online
"...is a growing list of gateways to the countries in this world, a reference directory and an electronic magazine."Wikipedia - (dead link)
"The Free Encyclopedia"
"...is a multilingual project to create a complete and accurate free content encyclopedia."World Factbook