Online version of Roget's II: The new Thesaurus, 3rd edition.
Internet Public Library
Features a searchable, subject-categorized directory of authoritative websites, links to online texts, newspapers and more.
Library Spot Reference Desk
A virtual library resource center for educators, students, librarians, families, and anyone exploring the Web for valuable research information.
American Memory from the Library of Congress
Provides free and open access to written and spoken words, recordings, images, prints, maps, sheet music and more, that document the American experience.
The American Heritage Dictionary of the English Language
Over 90,000 entries feature 10,000 new words and senses, with audio word pronunciations, language notes and word-root appendixes.
Info Tree Citation Machine - Good for Basic Research
An online interactive tool for creating citations in these four styles: APA, Chicago, MLA, and Turabian.