How do you spell xylophone? When did the Civil War end? What does obstreperous mean? These sites will help you find the answers.

• Encyclopedia Britannica
  (http://www.britannica.com)
  
  
• Online Classic Encyclopedia
  (http://www.1911encyclopedia.org/)
  
  
• Virtual Reference Desk
  (http://www.refdesk.com)
  
  
• The Internet Public Library
  This project of the University of Michigan School of Information contains guides to using the internet for research. (http://www.ipl.org)
  
  
• WISCAT On-line Catalog
  Using this statewide (Wisconsin) bibliographic database, users can search, print results, and obtain materials with the aid of the state's library systems. (http://www.wiscat.net/)
  
  
• Evaluating Information on the Internet
  A UWM web site created to help evaluate common online resources. (http://www.uwm.edu/letsci/edison/webevaluation/)
  
  
• Allexperts.com
  Allexperts.com has thousands of volunteers who dole out advice on more than 1,500 topics. (http://www.allexperts.com)
  
  
• Roget's Thesaurus
  (http://www.thesaurus.com)
  
  
• Bartlett's Quotations
  (http://www.bartleby.com/100/)