Biography.com: Helvetius, Claude-Adrien: Short note on his life and legacy.
Claude Adrien Helvetius: Brief entry on this French thinker from the Internet Encyclopedia of Philosophy.
Claude Adrien Helvetius: Wikipedia entry containing material from the 1911 Britannica.
FOLDOC: Helvaetius Claude-Adrien: Brief entry, with links to related topics, from this philosophical database.
Helvetius, Claude Adrien: Short biographical article from the 2001 Columbia Encyclopedia.
History of Economic Thought: Claude Adrien Helvetius: Profile and portrait of this Enlightenment thinker, with links to online French-language texts of his work.
Influence of Helvetius on Bentham: Excerpts from John Stuart Mill's work, Beckham.
Letters of Helvetius on Perusing the Manuscript of The Spirit of Laws: Two letters by the scholar, translated by Thomas Jefferson.