Encyclopedias
This site offers a comprehensive index of every artist represented at hundreds of museum sites. Offers image archives.
Encyclopedia of British History
A wonderful historical encyclopedia created in Great Britain and made freely available on the web by Spartacus Publishing Company.
Encyclopedia of Graphic Symbols
symbols.com contains more than 2,500 western signs, arranged into 54 groups according to their graphic characteristics. In 1600 articles their histories, uses and meanings are thoroughly discussed. The signs range from ideograms carved in mammoth teeth by Cro-Magnon men, to hobo signs to subway graffiti.
An online encyclopedia about mythology, folk lore, legends and more.
The Internet Encyclopedia of Philosophy
This site includes timelines, a table of contents and keyword searching.