On this site there are at the moment the text of Mill's
If you are interested in Mill himself, his Autobiography can
be found here:
http://www.john-mill.com/works/autobiography/ and is interesting
There is an interesting and well-done quite extensive set of
pages on Mill in the
Victorian Web, that itself is also interesting and well-done, and
that at present seems to have around 30.000 files.
And I straightened out the backgrounds to "Utilitarianism" in
2015, and probablu have to do the same late for the other two books.