Encyclopedias

Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Full text for subscribers only; free trial available.

Offers articles from the Columbia Encyclopedia and Britannica Concise Encyclopedia.

Peer-reviewed encyclopedia from Google. Articles are written by named contributors.

User-contributed online encyclopedia intended for people whose first language is not English.

Online version of the complete reference work along with dictionary, atlas, links, magazines, historical documents, audio, video, images, and 3D photographs.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 for full articles.