Ask http://www.ask.com
Kids Info http://www.kidinfo.com/SchoolSubjects.html
Kids Click--created by librarians for kids. http://www.kidsclick.org/
American Memory--From the Library of Congress. ttp://memory.loc.gov/ammem/index.html
America's Story--From the Library of Congress. Timeline of history. http://www.americaslibrary.gov/cgi-bin/page.cgi/jb
Digital History http://www.digitalhistory.uh.edu/
Kids Search Tools http://www.rcls.org/ksearch.htm
CyberSleuth Kids http://cybersleuth-kids.com/index.htm
Teach the Children Well--Elaine Doolittle's (teacher) collection of sites for kids. http://www.teachthechildrenwell.com/
Fact Monster http://www.factmonster.com/