Subject Searches - Databases - Virtual libraries
U.S. Government: Outdocuments
NCTE Blog: 21 Great Library Links: Library image and text databases
Freebase: repository of world's knowledge
University of Idaho: Repositories of original documents and academic research
Yahoo! Teachers: lesson plans/resources
Public Library of Science
National Archives Educators and Students site
Google Books
Universal Digital Library (one million books)
Gilder Lehrman Institute: one million primary-source documents for history classes
Nettrekker
World Factbook
Databases: grades 6-12
Blackboard Scholar
Twingine
TexShare: Texas public database for school use
Georgia Public Library System
Galileo: Georgia University System database
Scirus (science)
SOSIG (Social Sciences)
HUMBUL (Humanities)
Google News (news)
State virtual libraries
Biography Center
PSI Gate: Physical Science Information Gateway
GE Source (Geography Gateway)
Library of Congress
Memorial Hall Museum Online
The Gilder Lehrman Institute of American History: letters from American wars
About
Opendirectory
Librarians' Index to the Internet
Infomine
Academic Info
ERIC (for educators)
Qango
Links2go
The Big Hub (technology)
HUMBUL (Humanities)
StartSpot
Best History Sites
Biography Center
Direct Search
Find Articles
Free
FullText
Google Scholar
Internet Movie Database
Literary Criticism
National Science Digital Library
Nature Serve Explorer
Scirus(science)
Sci Net Science Search
OAIster: University of Michigan open-source academic database
IDEALS: University of Illinois open-source academic database