Encyclopędia Brittanica
Online encyclopedia includes Merriam-Webster's Collegiate Dictionary and Thesaurus, Britannica's Student Encyclopedia, and Britannica Book of the Year.

Grolier Online
Encylopedia Americana, Grolier Multimedia Encyclopedia, The New Book of Knowledge, The New Book of Popular Science, Lands and Peoples. Based on the text of the Academic American Encyclopedia. Includes new and expanded articles, web links, and bibliographies. It is updated monthly.