Merrimack Valley Library Consortium
(This site links to public libraries throughout the Merrimack Valley. If you have a library card from any one of these libraries you may use it to access on-line reference sources.)
This great site has every reference tool you could imagine, dictionaries, encyclopedias, news, weather and links to other great sites. The best of the best!!!
Librarian's Index to the Internet
A great site to begin your search for factual sources.
Multnomah County Library Homework Help
(a free virtual library resource center for educators and students, librarians and their patrons, families, businesses and just about anyone exploring the Web for valuable research information.)
Virtual Reference Library
(Reference sites selected by the Virtual Reference Library in Toronto Canada)