Awesome Library - is a web site that allows the public to gain access to the privately held databases.  

Bartleby.com - Every reference book imaginable in an online format. 

Biography: A&E  - This site provides brief biographical information on all kinds of people.

Discovery Channel School - a site from discovery channel that provides innovative teaching materials that sre dedicated to making teaching and learning an exciting.

High School Ace - Is a the trusted web portal to free quality educational resources for teens such as subject guides, reference tools, news, puzzles, quizzes, and college information.

Information Please - A site that lets you browse almanacs, dictionaries and encyclopedias.

Magazine Directory - A list of popular magazine websites

The Internet Public Library - a site containing a learning/research environment from the University of Michigan School of Information.

Michigan Electronic Library - MEL's "virtual library" is selected and evaluated by librarians and designed to be a comprehensive electronic information tool

Alpha Dictionary - A free online dictionary.

Reference Desk - A free and family-friendly web site that indexes and reviews quality, credible, and current web-based resources.

Research-It - This is your one-stop reference desk. It has dictionaries, thesauruses, foreign dictionaries, biographical dictionaries, geographical tools (maps and such), telephone directories, CIA Factbook (great for country reports), currency, stock market links, zip code directories, shipping facts, etc.