Databases
Grolier Multimedia Encyclopedia -- General encyclopedia for children and adults. Over 36,000 articles, 15,000+ bibliographies, 15,000 web links, tables, maps, flags.

New Book of Knowledge -- Encyclopedia articles, weblinks, maps, flags; over 9,000 articles updated weekly; 3,000 web links; maps & flags.

eBooks
Dictionary of American History -- This authoritative work serves students, scholars, and general readers interested in a wide range of topics in American history, from the well studied and familiar to the obscure.

Encyclopedia Americana -- Articles, web links, current events journals. Includes American Heritage Dictionary of the English Language, Roget's II: The New Thesaurus, and American Heritage English to Spanish Dictionary.

Encyclopedia of Espionage, Intelligence, and Security -- A comprehensive, subject specific guide to the history, uses, scientific principles, and technologies of espionage, intelligence, and security, with special emphasis placed on the current ethical, legal, and social issues surrounding this very topical subject.

Encyclopedia of Population 2v, 2003 -- Coverage of demographic topics both in the core field and in neighboring disciplines. Designed to encompass the large-scale changes in emphasis and research directions in population studies during the last 20 years, topics covered include: rapid demographic expansion in poor countries; low fertility rates and problems of old-age support; the environmental impact of a dense population; the press for expanded reproductive rights; and much more.

Encyclopedia of Small Business 2nd ed., 2v, 2002 -- Provides how-to information that entrepreneurs can apply to their own business. Contains 600 detailed articles and overviews of all the key information needs of small business owners, including financing, financial planning, business plan creation, market analysis, sales strategy, tax planning, and human resource issues.

Gale Encyclopedia of Multicultural America 2nd ed., 3v, 2000 -- 8,000 to 12,000 word essays on specific culture groups in the United States, emphasizing religions, holidays, customs, and languages in addition to providing information on historical background and settlement patterns. Also covers ethno-religious groups such as Jews, Chaldeans, and Amish. Each essay lists organizations and research centers; name, address, and contact information for periodicals, radio, and television stations; and a further readings section.

U*X*L Encyclopedia of Landforms and Other Geologic Features 3v, 2004 -- Physical and geological aspects, structure, and features of 48 of the earth's landforms - what they are, how they look, how they were created, how they change over time, and major geological events associated with them. Written for middle school students to support earth science and landform-related assignments, alphabetically arranged entries follow a standard and consistent subheaded format; range in length from 9 to 11 pages; and cover common and unusual landforms such as archipelago, estuary, isthmus, tributary, and many more.

Gale Encyclopedia of U.S. Economic History -- Addresses such key questions as: How has the U.S. Constitution shaped the economy of the United States? What were the consequences of Prohibition on consumers' behavior? This title presents 1,000 entries, era overviews, event/movement profiles, biographies, business/industry profiled, geographic profiles, and more.

Renaissance: An Encyclopedia for Students -- Renaissance-era topics most studied in high school world history, art, literature, economics, and science curriculum. Includes entries on a range of topics, including Florence, Galileo, heraldry, Medici family, opera, piracy, Shakespeare, Leonardo Da Vinci, and many others. Includes a master chronology with topical timelines, a bibliography with age-appropriate further reading sources, and a comprehensive index.

St. James Encyclopedia of Popular Culture -- More than 2,700 signed essays ranging from 500 to 2,500 words, written by subject experts and edited to form a consistent, readable, and straightforward reference. Entries include subject-specific bibliographies and, where appropriate, photographs and textual cross-references to related essays.

Websites
The Catholic Encyclopedia -- The 1913 edition of a standard reference work.

The Free Dictionary -- Online dictionary covering the English language as well as computing, financial, legal, and medical terminology, acronyms and idioms, and the Columbia and Wikipedia Encyclopedias.

Merriam-Webster Online -- Online dictionary based on the print version of Merriam-Webster's Collegiate® Dictionary, Eleventh Edition. Includes the main A-Z listing of the Collegiate Dictionary, as well as the Abbreviations, Foreign Words and Phrases, Biographical Names, and Geographical Names sections.

Visual Dictionary Online -- A reference work combining dictionary-scale definitions with detailed diagrams and illustrations. Search for contextual definitions of 20,000 terms and for diagrams and illustrations by keyword or browse a thematic index of 6,000 full-color images.

YourDictionary.com -- Online English dictionary providing definitions, thesaurus entries, spelling, pronunciation, and etymology results as well as specialized dictionaries, thesauri or glossaries, and other guides on acronym and abbreviations, style, rhyming and pronunciation, speech synth, and more.