Univ. of Virginia Info Page
http://etext.virginia.edu/english/eliot/middlemarch/
Information about author George Eliot, criticism of the novel, and various aspects of the novel, like characters and themes.
Review from The Atlantic
http://www.theatlantic.com/unbound/classrev/middlema.htm
Brief critical perspective on the novel, with comparisons to Eliot's other works.
Princeton's online
http://www.princeton.edu/~batke/eliot/middle/middle-1.html
searchable full text of Middlemarch.
"The Wit and Wisdom of George Eliot".
http://http://www.interlog.com/~calex/personal/eliot.html
Information on all her novels, her life, etc. with many valuable links to George Eliot resources.
Extensive listing
http://www.clpgh.org/Carnegie/CLP/Humanities/eliotg.html
of books about and related to Middlemarch, George Eliot, and related subjects.