A System of Logic (excerpt)
(engl.)
at Marxists Internet Archive
[www.marxists.org/reference/subject/philosophy/works/en/mill.htm]

Nature. The Utility of Religion and Theism (excerpt)
(engl.)
at Lancaster University
[www.lancs.ac.uk/users/philosophy/texts/mill_on.htm]

Principles of Political Economy (excerpt)
(engl.)
at Marxists Internet Archive
[www.marxists.org/reference/archive/mill-john-stuart/principles-political-economy/ch301.htm]

The Logic of the Moral Sciences (excerpt: ch. 6)
(engl.)
at Vintage Mill
[www.laits.utexas.edu/poltheory/mill/sol/index.html]

Thornton on Labour and its Claims (article: Part I, pp. 505-18; Part II, pp. 680-700)
(engl.)
at McMaster University
[socserv2.socsci.mcmaster.ca/~econ/ugcm/3ll3/mill/thorn.html]