Among other sources, this database includes entries from Africana: The Encyclopedia of the African and African American Experience (5 vols., 2005).

Online version of the popular Encyclopedia. This free version is not as detailed as the premium product.

Encyclopedia in development with the goal of having information about every single organism on Earth.

Authoritative online encyclopedia of mythology, folklore, and religion.
Contains entries from the latest editions of the McGraw-Hill Encyclopedia of Science & Technology and the McGraw-Hill Dictionary of Scientific & Technical Terms. Includes thousands of illustrations, as well as related biographies and research updates.
Oxford Reference Online is the core collection which contains about 100 dictionary, language reference, and subject reference works published by Oxford University Press. It includes the Concise World Encyclopedia.
Grove Art Online provides web access to the entire text of The Dictionary of Art (1996, 34 vols.) and The Oxford Companion to Western Art (2001). It offers ongoing additions of new and updated articles, art images and line drawings, and extensive external links.
Grove Music Online includes the full text of The New Grove Dictionary of Music and Musicians (29 vols, 2001), The New Grove Dictionary of Opera (1992), and The New Grove Dictionary of Jazz (2002). Articles are updated on a regular basis.