Mark Twain Forum - Comprehensive
Mark Twain in His Times - From University of Virginia.
Mark Twain Center at Elmira College - Features an archive of audio lectures from Mark Twain scholars
Mark Twain Boyhood Home and Museum - Hannibal, MO. This site includes free lesson plans for teachers.
Mark Twain Stormfield Project - Blog by Brent Colley with research on Samuel L. Clemens's home in Redding, Connecticut
Mark Twain Gallery and Centennial Collection of artist Susan B. Durkee - Limited edition Mark Twain prints and historic information on Twain's home and property known as "The Lobster Pot"
Following the Equator - A Mark Twain Blog - By Brian Solomon features Mark Twain related news
Peter Salwen's Mark Twain Pages - includes audio file of William Gillette's impersonation of Mark Twain
Mark Twain's Mississippi River - From Northern Illinois University - includes video interviews with Gregg Camfield, Shelley Fisher Fishkin, and Robert Hirst.
reference books --