• Ask a Librarian (Palomar College)
• Answers.com
• About.com
• Ask a Scientist (Howard Hughes Medical Institute)
• Ask Dr. Math
• Ask Dr. Universe
• eHow
• Ask Jeeves
• HowStuffWorks

Dictionaries & Thesauri (English-language)

• American Heritage Dictionary
• Acronym Finder
• Cliche Finder
• Dictionary of Slang
• Dictionary.com
• Getty Thesaurus of Geographic Names
• Guide To Internet Dictionaries
• Newberry House Online Dictionary (of American English)
• Oxford English Dictionary (Palomar College only - passwords required off-campus)
• Rap Dictionary
• Roget's II: The New Thesaurus
• Thesaurus.com
• Wordsmyth English Dictionary-Thesaurus
• Merriam-Webster Online Dictionary
• yourDictionary.com

Encyclopedias and Almanacs

• InfoPlease
• Borderlands Encyclopedia (Univ. of Texas)
• The Catholic Encyclopedia
• EBSCO Encyclopedia of Animals (Palomar College only - passwords required off-campus)
• Encyclopedia Britannica
• Funk & Wagnall's New World Encyclopedia (Palomar College only - passwords required off-campus)
• Gale Virtual Reference Library (Palomar College only- passwords required off-campus)
• Encyclopedia of the Orient
• Fast Facts
• Jewish Virtual Library
• The Peace Encyclopedia
• A Shi'ite Encyclopedia
• Spartacus Internet Encyclopedia [of History]
• Stanford Encyclopedia of Philosophy
• Tech Encyclopedia
• Webopaedia
• Wikipedia

Dictionaries (Foreign-language and Translators)

• WordReference.com (English to French, German, Spanish, and Italian)
• Google Language Tools
• AltaVista Translation
• ARTFL: French-English Dictionary
• ARTFL: French Conjugator
• ARTFL: Dictionnaires d'autrefois (French dictionaries of 16th, 17th, 18th, 19th Centuries)
• Dictionary.com
• Latin Dictionary and Grammar Aid
• R-O Matic Italian/English Dictionary
• Travlang
• YourDictionary.com

        Search also Languages & Linguistics

Dictionaries (Topical)

• BABEL: A Glossary of Computer Oriented Abbreviations & Acronyms
• Biographical Dictionary
• Botanical Glossary
• Center for Nonverbal Studies
• Dictionary of Philosophical Terms and Names
• Dictionary.com
• Duhaime's Law Dictionary
• Easton's 1897 Bible Dictionary
• Free On-Line Dictionary of Computing
• GardenWeb Glossary of Botanical Terms
• Glossarist: Art Glossaries and Dictionaries
• Glossarist: Dance Glossaries and Dictionaries
• Glossary of Poetic Terms
• Jargon File (Computer lexicon)
• Medical Dictionaries

• Biographical Directory of the United States Congress
• Biographical Dictionary
• Biographies (Historical)
• Biographies (Scientists)
• Biography (A&E Television Network)
• Biography Resource Center (Palomar College only - passwords required off-campus)
• Black Scientists & Inventors
• Distinguished Women of Past and Present
• Dr. K’s Famous Scientists
• Eric Weisstein’s World of Scientific Biography
• Famous Scientists 1
• Famous Scientists 2
• Find A Grave
• 4000 Years of Women in Science
• Gallery of Achievers
• Great Canadian Scientists
• HistoryMakers
• NameBase 
• National Inventors Hall of Fame
• Nobel Prize Laureates
• Presidents of the United States
• Scientists, Inventors, Explorers
• Super Scientist: Scientists Who Did Work in Energy
• Supreme Court Justices
• Time Magazine’s List of 100 Scientists
• Yahoo: Directory of Scientists 

            Search also specific subjects for biographies of persons by discipline

Publications (Books, Journals, Media)

• Palomar College Library Catalog (Palomar College Library collection; no password required)
• Netlibrary Ebooks at Palomar (Palomar College only - passwords required off-campus)
• Title Source III (Palomar College only - passwords required off-campus)
• Palomar College Bookstore
• Amazon.com (U.S. imprints)
  • United Kingdom
  • Germany 
• Barnes&Noble
• Bibliofind (old, used, and rare books)
• Bookfinder (find and compare prices on books)
• BookTV.org
• California State Library, California State Publications
• Children's Literature Web Guide (University of Calgary)
• Directory of Publishers
• Great Books Online (Bartleby.com)
• International Children's Digital Library
• Isbn.nu (find the best prices for books)
• LibriVox (free audiobooks of materials in public domain)
• Libros Sin Fronteras
• Making of America: 19th Century Books and Periodicals (digital full-text)
• Martinez Books & Art Gallery
• The On-line Books Page
• Online Bookstores (American Booksellers Association)
• Pastpaper.com (old issues of magazines, newspapers, books, and ephemera)
• Publishers' Catalogues Home Page
• Rare Book, Manuscript, and Special Collections Library (Duke University)
• Religious and Sacred Texts (Internet Sacred Text Archive)
  Textbooks
  • Palomar College Bookstore
  • eFollett: New and Used College Textbooks
  • Textbooks.com
  • BIGWORDS.com
  • SchoolTextbooks
  • VarsityBooks.com
• Worldcat

View also the online catalogs of other libraries

Directories

• ATT 800 Number Directory
• Zip Code Lookup and Address Information (USPS)

Maps & Geographic

Standards

• Calendar Zone
• Constants & Equations Page
• Dictionary of Units
• Federal Reserve Fund Rates & Forecasts
• U.S. Naval Observatory Master Clock
• Universal Currency Converter
• Time & Date

Statistics

• American Fact Finder (Census Bureau)
• Bureau of Economic Analysis
• Bureau of Justice Statistics (Federal)
• Census 2000 EEO Data Tool employment statistics
• Counting California (California Digital Library)
• Criminal Justice Statistics Center (California)
• Digest of Education Statistics
• FedStats
• Global Statistics
• Historical Census Data Browser (1790+)
• Income of the Population 55 and Older
• Infonation (United Nations)
• International Data Base (Census Bureau)
• Map Stats (county & state profiles) (Census Bureau)
• The Modern Language Association Language Map (comparative linguistic statistics) (Census Bureau)
• National Center for Education Statistics
• National Center for Health Statistics
• National Highway Traffic Safety Administration (NHTSA)
• Nationmaster.com (comparative statistics)
• NumbersUSA (population and immigration statistics)
• Occupational Outlook Quarterly
• The Population Profile of the United States
• State of World Population (United Nations)
• Statistical Abstract of the United States (Census Bureau)
• Statistical Assessment Service (STATS)
• Statistical Resources on the Web (Univ. of Michigan Documents Center)
• United Nations Population Information Network
• World Fact Book (CIA)

Search also under specific subjects

Quotations

• Bartlett's Quotations

• Famous Quotes and Famous Sayings

General Interest

• EBSCOhost MasterFILE Premier (Palomar College only - passwords required off-campus)

• Bartleby.com: Reference

• Cliche Finders

• DeskRef

• eHobbies

• Federal Citizen Information Center

• Festival Finder

• Festivals.com

• Government Grants Locator

• Great Books Online

• GuideStar (nonprofit philanthropy)

• Holidays: Religious and Secular

• Howtocleananything.com

• Informationplease.com

• Institute of Museum and Library Services (search for digital collections and content)

• Internet Public Library

• LegalTrac (Palomar College only - passwords required off-campus)

• Martindale's Reference Desk

• NameBase 

• National Consumers League

• Nobel Prize Internet Archive

• Omniglot: A guide to writing systems

• PolicyArchive.org (online archive public policy research)

• PollingReport.com

• ProCon.org (Pros and Cons of controversial issues)

• States & Capitals

• U.S. Government Manual

• Wayback Machine (web page archive)

• Web of On-Line Grammars (real and artificial languages)

• WebGarden: Horticulture and Crop Science

• WWW Virtual Library

Search also: Subject Links for resources in specific disciplines, or Online Databases for periodical articles.  For additional research assistance, please Ask a Librarian.