General References
World Lecture Hall (links to courses worldwide)
Country Studies - The Library of Congress
Social Science Data Center
Biographical Dictionaries (over 19,000 biographies from ancient to present)
Britannica Internet Guide by Britannica Encyclopedia
Calculators On-Line Center (over 5,200 calculators)
Educational Links Archive (links to over 1000 educational sites)
Connections (lesson plans, activities, curriculum resources
The Internet Sleuth (over 2000 searchable databases)
Library of Congress Home page
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