The Official Web Site of Mark Twain
http://www.cmgww.com/historic/twain/about/bio.htm
Official site run by Mark Twain's estate. Contains biographical information, a list of works, photographs, and other helpful resources.
The Many Sides of Hank: Modifications, Adjustments, and Adaptations of Mark Twain's A Connecticut Yankee in King Arthur's Court
http://www.english.ufl.edu/imagetext/archives/v3_3/keebaugh/
Critical essay exploring the character of Hank in depth. Discusses how Hank is paradoxical and how he adapts to life in Arthurian England.