The purpose of this paper is to trace the influence of Cervantes upon Mark Twain, with particular attention to the supposedly autobiographical tales Huckleberry Finn and Tom Sawyer.A short digression will be necessary at the outset in order to overcome, if possible, an almost universal prejudice. The popular notion is that Mark Twain's genius “just grew,” like Topsy; that he was peculiarly a “self-made” man, the term “self-made” being understood to mean “lacking in book learning.” We like to think that Mark Twain, above all other authors, dug into the virgin soil of his native country, and brought forth rich treasures which could be found nowhere else. We like to say: “What genuine American humor! What a true picture of American boyhood! Nothing of Europe in Mark Twain! Tom Sawyer and Huckleberry Finn are real Americans!”