The Oxford Companion to Philosophy New Edition, at Amazon USA
The Oxford Dictionary of Philosophy, at Amazon USA
The Cambridge Dictionary of Philosophy, at Amazon USA
History of Philosophy, Volume 1, at Amazon USA
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Existentialism
Cliffs Notes on The Worldly Philosophers
CliffsNotes on Thoreau, Emerson, and Transcendentalism
CliffsNotes on Walden
CliffsNotes on Emerson's Essays
Wikipedia
Friedrich Nietzsche's grave under threat from search for brown coal - 26/03/08 FR Comments
Key Concepts of Nietzsche's Philosophy Flashcard Exchange
'Criminal' manipulation of Nietzsche by sister to make him look anti-Semitic - 19/01/10