Claude Adrien Helvetius
- Wikipedia entry containing material from the 1911 Britannica.
- http://en.wikipedia.org/wiki/Helvetius

FOLDOC: Helvaetius Claude-Adrien
- Brief entry, with links to related topics, from this philosophical database.
- http://www.swif.uniba.it/lei/foldop/foldoc.cgi?Helvaetius+Claude-Adrien

Helvetius, Claude Adrien
- Short biographical article from the 2001 Columbia Encyclopedia.
- http://www.bartleby.com/65/he/Helvetiu.html

History of Economic Thought: Claude Adrien Helvetius
- Profile and portrait of this Enlightenment thinker, with links to online French-language texts of his work.
- http://cepa.newschool.edu/het/profiles/helvetius.htm

Influence of Helvetius on Bentham
- Excerpts from John Stuart Mill's work, Beckham.
- http://www.class.uidaho.edu/mickelsen/texts/helvetius%20influence.htm

Biography.com: Helvetius, Claude-Adrien
- Short note on his life and legacy.
- http://search.biography.com/print_record.pl?id=5466

Letters of Helvetius on Perusing the Manuscript of The Spirit of Laws
- Two letters by the scholar, translated by Thomas Jefferson.
- http://www.econlib.org/library/Tracy/ddtMSL28.html