Introduction to the System of Logic  
   As presented in the 1884 edition of this work. Contains some reflections on logic and its relation to other realms of inquiry.
   http://www.marxists.org/reference/subject/philosophy/works/en/mill.htm

Bartleby.com: John Stuart Mill  
   Full text of autobiography, On Liberty, other works; essays about Mill and his works.
   http://www.bartleby.com/people/Mill-JS.html

Principles of Political Economy  
   Full text in HTML format, presented by the Liberty Fund.
   http://www.econlib.org/library/Mill/mlP.html

The Principles of Political Economy  
   Online text.
   http://socserv2.socsci.mcmaster.ca/~econ/ugcm/3ll3/mill/prin/index.html

Representative Government  
   Full work in text format from EServer, based at Iowa State University.
   http://eserver.org/philosophy/mill-representative-govt.txt

On Nature  
   Brief essay by Mill aimed at refuting Rousseau's notion of living in accord with nature.
   http://www.marxists.org/reference/subject/philosophy/works/en/mill2.htm

Vintage Mill  
   Various texts by John Stuart Mill including Autobiography, Chapters on Socialism, Considerations on Representative Government , Dissertations and Discussions, On Liberty, A System of Logic: Ratiocinative and Inductive, The Subjection of Women, Three Essay
   http://www.la.utexas.edu/research/poltheory/mill/index.html

Utilitarianism  
   Mill's classic exposition of utilitarian ethics from 1863.
   http://www.constitution.org/jsm/utilitarianism.htm

On Colonies and Colonization  
   An excerpt from Mill's 1848 Principles of Political Economy. Part of the Internet Modern History Sourcebook.
   http://www.fordham.edu/halsall/mod/1849jsmill-colonies.html

Chapters on Socialism  
   Writings of J. S. Mill on socialism culled from articles which originally appeared in the Fortnightly Review in the February, March, and April issues for 1879.
   http://www.la.utexas.edu/research/poltheory/jsmill/cos/index.html