Constructed by Jim Zwick:
http://www.boondocksnet.com/twainwww/
Contains links to biographies, criticism, and other online links regarding Mark Twain. Includes sillier interactive displays, such as the "Twain for 2000" presidential campaign. Includes full text versions of select works and discussion forums for topics related to Twain's works. Also contains useful guides to seeking online information about Mark Twain and his works. Very helpful!
Bragi:
http://www.bragi.com/classics/t/mt1835/ats22.shtml
an online collection of texts. HTML formatted version of the entire novel, organized by chapter.
Full Text Versions of Mark Twain's Novels Online
http://www.gradesaver.com/ClassicNotes/LiteratureOnline/MarkTwain.html
Mark Twain Forum
http://http://www.yorku.ca/twainweb/
"Scholarly discussion" of the life and writings of Mark Twain. Postings include queries, book reviews, calls for papers, and general discussion. Provides a comprehensive list of book reviews, criticisms, references, multimedia, etc. available.
Mark Twain in His Times
http://etext.virginia.edu/railton/index2.html
Produced by the Electronic Text Center at the University of Virginia, written and directed by Stephen Railton, Dept. of English at the University of Virginia. An "interpretive archive that focuses on how Mark Twain' and his works were created and defined, marketed and performed, reviewed and appreciated." An excellent online source to learn gain a better understanding of Twain's frontier and Southern background. Also includes a useful online search of texts, manuscripts, criticisms and reviews as well as interactive exhibits.
World Wide School Website
http://www.worldwideschool.org/library/catalogs/bysubject-lit-marktwain.html
Contains a comprehensive list of Twain's most familiar works, including their full text.
Home of the Mark Twain Museum
http://www.hannibal.net/MarkTwainMuseum/index.html
Contains interesting photographs and interactive exhibits that engage the reader in the setting that inspired Twain to write The Adventures of Tom Sawyer.