1911 Encyclopedia Britannica Offers the 11th Edition Encyclopedia Britannica which is now in the public domain. All articles are searchable and alphabetized.
Bartleby.com Online publication of the Columbia Encyclopedia, Sixth Edition.
Encyberpedia Electronic encyclopedia with its own content as well as over 10,000 links to the best reference sites on the Internet.
Encyclopaedia Britannica Online Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Free trial.
Encyclopedia FunTrivia Thousands of categorized entries of trivia - an invaluable resource for answer seekers.
Encyclopedia Smithsonian Links to online Smithsonian resources and answers to frequently asked questions from A to Z.
Encyclopedia Smithsonian Links to on-line Smithsonian resources and answers to frequently asked questions from A to Z.
Encyclopedia.com Free resource offers more than 50,000 concise articles.
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.
EncycloZine: Learning Fun! EncycloZine is a concise illustrated encyclopedic portal covering a wide range of topics in the arts, humanities, sciences, and technology. It also features games, puzzles, quizzes, and a multimedia gallery.
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 information and references to specific subjects.
The Probert Encyclopaedia Reference source with several hypertext linked entries covering a broad variety of subjects.
Wikinfo User edited encyclopedia based on Wiki software. Contains articles, information on editing, and a list of differences between this encyclopedia and Wikipedia.
Wikipedia Free volunteer-edited encyclopedia with over 200,000 articles.
Wikipedia A free encyclopedia built collaboratively using Wiki software. (GNU Free Documentation License).
World Book Encyclopedia Offers in-depth information on a variety of subjects and educational activities for children.
World Book Encyclopedia Publisher site promoting sales of bound copies and offering link to online version.
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.
