AccessScience (McGraw-Hill Encyclopedia of Science & Technology)

American Heritage Dictionary 4th Edition (free)

Blackwell Encyclopedia of Sociology

Database of Latin Dictionaries

Dictionary of Old English Corpus

Dictionary of Old English: A - F on CD-ROM  (CD-ROM)

Encyclopedia Britannica Online

Encyclopedia of Chromatography

Encyclopedia of Mathematical Physics

Encyclopedia of Public Administration & Public Policy

Funk & Wagnalls New World Encyclopedia

Gale Virtual Reference Library (GVRL)

Grove Art Online

Lexicons of Early Modern English: LEME (free)

Merriam-Webster OnLine Collegiate Dictionary (free)

Merriam-Webster OnLine Collegiate Thesaurus (free)

Oxford English Dictionary Online (OED)

Oxford Language Dictionaries Online

Oxford Reference Online: Premium Collection with Western Civilization and Literature Collections

Roget's II: The New Thesaurus (free)

Routledge Encyclopedia of Philosophy