Dictionaries

Cambridge Dictionaries Online - An online resource providing access to entries Cambridge publications: Cambridge International Dictionary of English, Cambridge Learner's Dictionary, Cambridge Dictionary of American English, Cambridge International Dictionary of Idioms, Cambridge International Dictionary of Phrasal Verbs, Cambridge Klett Bilingual Dictionary-French/English and Cambridge Klett Bilingual Dictionary-Spanish/English.
Credo Reference (Formerly XReferPlus) Dictionaries* Digital reference library of dictionaries.
Merriam-Webster Collegiate Dictionary Online* - From Encyclopedia Britannica Online.
Merriam-Webster Online - Includes a thesaurus, reverse dictionary, rhyming dictionary and more.
Merriam-Webster Online Thesaurus* - From Encyclopedia Britannica Online.

Encyclopedias

Columbia Encyclopedia - Containing nearly 51,000 entries (marshalling six and one-half million words on a vast range of topics), and with more than 80,000 hypertext cross-references, the current Sixth Edition is among the most complete and up-to-date encyclopedia ever produced.
Credo Reference (Formerly XReferPlus) Encyclopedias* Digital reference library of encyclopedias.
Encyclopedia Britannica Online* - A comprehensive reference which includes the complete encyclopedia, as well as the Merriam-Webster's Collegiate dictionary and the Britannica yearbook. EB online can be used to search an Internet directory with more than 130,000 links to web sites selected, rated and reviewed.
Salem Press History* Includes the following series: The Fifties in America, The Sixties in America, The Seventies in America, The Eighties in America, and The Nineties in America. Available online through December 31, 2011.