There's an article by Wilson Faude in WINTERTHUR PORTFOLIO 10 (1975) that would probably be useful to you, and of course, Faude's 1978 book on the restoration of the Hartford house. There are also 15-20 guides to historic homes that include Twain's house and some discuss it in context with others. Quality and content varies wildly-- Bacon, Edwin. Literary Pilgrimages Bass, Geri US Guide to Lit Landmarks Benedict, Stewart Lit Guide to US Burke, Michelle Ideals Guide to Lit Places Eastman, John Who Lived Where Ehrlich, Eugene Oxford Illus Guide to Homes & Museums Gilder, J L Authors at Home, Haas, Irvin Historic Homes Halsey, Francis Authors of Our Day Harkins, E F Little Pilgrimages Kraft, Stephanie. No Castles on Main Street etc, etc Kevin Mac Donnell Austin TX