1911 Encyclopedia Britannica- Offers the 11th Edition Encyclopedia Britannica which is now in the public domain. All articles are searchable and alphabetized.pop
Bartleby.com- Online publication of the Columbia Encyclopedia, Sixth Edition.pop
Encyberpedia- Electronic encyclopedia with its own content as well as over 10,000 links to the best reference sites on the Internet.pop
Encyclopaedia Britannica Online- Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Free trial.pop
Encyclopedia FunTrivia- Thousands of categorized entries of trivia - an invaluable resource for answer seekers.pop
Encyclopedia Smithsonian- Links to on-line Smithsonian resources and answers to frequently asked questions from A to Z.pop
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.pop
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.pop
The Probert Encyclopaedia- Reference source with several hypertext linked entries covering a broad variety of subjects.pop
Wikinfo- User edited encyclopedia based on Wiki software. Contains articles, information on editing, and a list of differences between this encyclopedia and Wikipedia.pop
Wikipedia- A free encyclopedia built collaboratively using Wiki software. (GNU Free Documentation License).pop
World Book Encyclopedia- Online version of the complete reference work along with dictionary, atlas, links, magazines, historical documents, audio, video, images, and 3D photographs.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.pop
World Book Encyclopedia- Publisher site promoting sales of bound copies and offering link to online version.pop