Philosophy: Background Information

• Stanford Encyclopedia of Philosophy
• Routledge Encyclopedia of Philosophy     Online edition     Print edition
• Oxford Handbooks Online. Philosophy
• Wiley Online Library: Philosophy
• The Cambridge Companions to Philosophy, Religion and Culture
• Cambridge Dictionary of Philosophy (2nd ed., 1999).  Online edition     Print edition
• Cambridge Histories Online (Philosophy and Political & Social Theory collections)
• Dictionary of the History of Ideas (1973-74)     Online edition    Print edition   
• Encyclopedia of the Enlightenment
• Encyclopedia of Philosophy (Macmillan) (2nd ed., 2006).  Online edition   Print edition
• Project Vox (Duke University Libraries)
• Internet Encyclopedia of Philosophy
• New Dictionary of the History of Ideas (Scribner's) (2005)     Online edition    Print edition

General Reference Sources

• International encyclopedia of the social & behavioral sciences
• Literati by Credo

  A general resource including encyclopedias, dictionaries, and handbooks. Similar to Gale Virtual Reference Library.
• Oxford Reference Online
  Covers all areas of academic research.