1. Articles
How to Search the Invisible Web
Invisible Web Directory
Seek and Ye Shall Find: Locate original documents on the Web
2. Academic Research
BibSonomy
Website
Description
CiteULike
Website
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Connotea
Website
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Google Scholar
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InfoMine
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Research Resources
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SciFinder
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Study Guides and Strategies
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WebLens
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Description
Windows Live Academic
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3. EBooks
DailyLit
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Project Gutenberg
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The Online Books Page
World eBook Library
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TextBook Revolution
Website
4. Timelines
Timeline Index
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HistoryMole
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eHistory
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5. Quotes
The Quotations Page
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Bartleby Quotations
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Yahoo Quotations
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Quotable Online
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6. Encyclopedias
Wikipedia
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Encyclopedia Britannica Online
Cost
~ $70 per year
Website
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MSN Encarta
Cost
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7. Libraries
Questia
Cost
~ $20 per month
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Bartleby
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Google Book Search
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Stanford HighWire Press
Cost
Free and Charge
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About
Title
Digital Enlightenment: Content
Subject
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Company
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Author
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Version
70
Comments
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