• Britannica
    Highly respected encyclopedia in publication since 1768. Features over 100,000 scholarly articles.
    britannica.com - Encyclopedia
  • Catholic Encyclopedia
    10,000 articles on Catholic history, interests, and doctrine.
    newadvent.org - Religion
  • Columbia Encyclopedia (via Infoplease)
    Columbia's encyclopedia offers 57,000 entries.
    infoplease.com - Encyclopedia
  • Computer Desktop Encyclopedia
    Features 20,000 topics and 2,500 images. Search field at bottom of page.
    computerlanguage.com - Computers
  • Credo Reference
    Provides access to encyclopedia entries on thousands of topics.
  • Encyclopedia Mythica
    Premier encyclopedia covering mythology, folklore, and religion.
    pantheon.org - Mythology
  • Encyclopedia of Life
    Database cataloging information on thousands of known species.
    eol.org - Biology
  • Encyclopedia of Philosophy
    Hundreds of original contributions by philosophy experts and volunteers.
    iep.utm.edu - Philosophy
  • Encyclopedia of Symbols
    Collection of signs and ideograms grouped by graphic characteristics.
    symbols.com - Symbols
  • Encyclopedia.com
    Over 300,000 articles from sources like Oxford University Press and Columbia Encyclopedia.
  • Europeana
    Digital collection of scientific and cultural texts, images, videos, and sounds.
  • How Stuff Works
    Source for easy-to-understand explanations of how things work.
    howstuffworks.com - Science
  • Larousse (French)
    French language encyclopedia featuring 90,000 entries.
  • Medline Medical Encyclopedia (by ADAM)
    Diseases, symptoms, injuries, and more with photographs and illustrations.
    medlineplus.gov - Medical
  • Reference.com
    Encyclopedia aggregator. Sources include Columbia Encyclopedia and Wikipedia.
    reference.com - Aggregator
  • Scholarpedia
    Peer-reviewed encyclopedia written by scholars from around the world.
  • Smithsonian
    Online resources from the Smithsonian Institution.
    si.edu - Encyclopedia
  • Stanford Encyclopedia of Philosophy
    Hundreds of refereed encyclopedia entries.
    plato.stanford.edu - Philosophy
  • The Canadian Encyclopedia
    More than 19,500 bilingual articles as well as timelines, classroom resources, and quizzes.
  • Who2
    Encyclopedia of more than 3,000 famous people and fictional characters.
    who2.com - Famous People
  • Wikipedia
    Encyclopedia authored and edited by users. Features over 6,000,000 English entries.
    wikipedia.org - Encyclopedia
  • World Book
    Trustworthy, professionally-authored encyclopedia in print since 1917. Subscription required.
    worldbook.com - Encyclopedia
  • World Digital Library
    Archive of cultural heritage artifacts from libraries, archives, and museums around the world.
    loc.gov - Encyclopedia