Encyclopedias

Hi Beam Encyclopedia EncyclopediaCom http://www.encyclopedia.com/
Info Please Encyclopedia InfoPlease http://www.infoplease.com/
Britannica Britannica hhttp://www.britannica.com/
Simple English Wikipedia SimpleEnglishWikipedia http://simple.wikipedia.org/wiki/Main_Page
Wikipedia Wikipedia http://en.wikipedia.org 
Yahoo! Education: Reference YahooEducationReference http://education.yahoo.com/reference