Actually, wouldn't it be fair to state that these "most popular" Twain novels were written in Hartford and Elmira? (or if feeling competitive, make it alphabetical -- Elmira and Hartford.) Writing a book consists of more than writing those final words in manuscript. From all research I've come across (comparing dates of letters, journal entries, etc.) one can deduce that the novels were written in both homes -- Farmington Avenue and Quarry Farm. It will continue to be an ongoing debate though --I can guarantee it! Lisa Steier