Encyclopaedia Britannica Online  
   Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Free trial.
   http://www.eb.com/

EncycloZine  
   Portal/concise encyclopedia offers fun activities for learning and exercising the mind. Daily articles introduce new topics in the arts, humanities, science, and technology, and provide links to related sites.
   http://EncycloZine.com/

The Probert Encyclopaedia  
   Reference source with several hypertext linked entries covering a broad variety of subjects.
   http://www.probert-encyclopaedia.co.uk/

Encyberpedia  
   Electronic encyclopedia with its own content as well as over 10,000 links to the best reference sites on the Internet.
   http://www.encyberpedia.com/cyberlinks/links/index.html

Informationsphere.com  
   Free online encyclopedia that allows users to submit their own articles for inclusion in its database.
   http://www.informationsphere.com/

Encyclopedia FunTrivia  
   Thousands of categorized entries of trivia - an invaluable resource for answer seekers.
   http://www.funtrivia.com/trivia.html

Encyclopedia Smithsonian  
   Links to on-line Smithsonian resources and answers to frequently asked questions from A to Z.
   http://www.si.edu/resource/faq/start.htm

Bartleby.com  
   Online publication of the Columbia Encyclopedia, Sixth Edition.
   http://www.bartleby.com/65

Encyclopaedia Britannica, 1911 Edition  
   Browsable full text of the 11th edition.
   http://www.1911encyclopedia.org/

How Stuff Works  
   Articles explain how hundreds of things work, from elements of the human body to space-age technology.
   http://www.howstuffworks.com/

Free Internet Encyclopedia  
   An encyclopedia composed of information available on the Internet. MacroReference contains references to large areas of knowledge, FAQs where available, and pointers to relevant areas of the MicroReference. MicroReference contains short bits of informatio
   http://www.cam-info.net/enc.html

Wikipedia  
   A free encyclopedia built collaboratively using Wiki software. (GNU Free Documentation License).
   http://en.wikipedia.org

Wikinfo  
   User edited encyclopedia based on Wiki software. Contains articles, information on editing, and a list of differences between this encyclopedia and Wikipedia.
   http://www.wikinfo.org/

World Book Encyclopedia  
   Online version of the complete reference work along with dictionary, atlas, links, magazines, historical documents, audio, video, images, and 3D photographs. Requires free temporary registration with option to buy continued access.
   http://www.worldbookonline.com/

HighBeam Library Research  
   Possible to conduct research using a database of reliable sources.
   http://www.highbeam.com/library/