JSTOR is a digital library of academic journals, books, and primary sources.
http://www.jstor.org/

Encyclopedia.com has more than 100trusted sources, including encyclopedias, dictionaries, and thesauruses with facts,
definitions, biographies, synonyms, pronunciation keys, word origins, and abbreviations.
http://?http://www.encyclopedia.com/

SIRS Issues Researcher is available online through SIRS Knowledge Source®. SIRS Issues Researcher provides the following features and tools:

• Today’s News
• ‘Top 10’ Leading Issues
• Daily updating
• Article Text to Speech
• Language Translation
• Citation Generator
• Visual Browse tool
• iTHINK Skills Tutor
• Note Organizer
• Focus on Terrorism
• Curriculum Pathfinders
• Dictionary & Thesaurus
• The World Almanac Excerpts
  http://www.proquest.com/products-services/sirs_researcher.html