Fact Monster- for children
Wiakipedia- full free encyclopedia
Britannica.com - Nearly boundless research tool.
Columbia Encyclopedia - Full text at Bartleby.com.
Encarta Online - Abridged version of software.
Encyclopedia.com - Simple and free encyclopedia.
How Stuff Works - Find out how just about anything works.
Information Please - Encyclopedia and dictionary in one.
xrefer - Encyclopedia, thesaurus and quotations in one.
Encyclopedia Smithsonian - Science, Health & Nature
Home Improvement Encyclopedia
| 
