Mark Twain’s first important work, The Celebrated Jumping Frog of Calaveras County, was first published in the New York Saturday Press on November 18, 1865. The only reason it was published there was because his story arrived too late to be included in a book Artemus Ward was compiling featuring sketches of the wild American West.
Twain's next major publication was The Adventures of Tom Sawyer, which drew on his youth in Hannibal. The character of Tom Sawyer was modeled on Twain as a child, with traces of two schoolmates, John Briggs and Will Bowen. The book also introduced in a supporting role the character of Huckleberry Finn, based on Twain's boyhood friend Tom Blankenship.
Twain’s next major published work, Adventures of Huckleberry Finn, solidified him as a noteworthy American writer. Some have called it the first Great American Novel. Finn was an offshoot from Tom Sawyer and proved to have a more serious tone than its predecessor. The main premise behind Huckleberry Finn is the young boy’s belief in the right thing to do even though the majority of society believes that it was wrong. The book has become required reading in many schools throughout the United States because Huck ignores the rules and mores of the age to follow what he thinks is just (the story takes place in the 1850s where slavery is present). Four hundred manuscript pages of Huckleberry Finn were written in the summer of 1876, right after the publication of Tom Sawyer. Some accounts have Twain taking seven years off after his first burst of creativity, eventually finishing the book in 1883. Other accounts have Twain working on Finn in tandem with The Prince and the Pauper and other works in 1880 and other years. The last fifth of Finn is subject to much controversy. Some say that Twain experiences—as critic Leo Marx puts it—a "failure of nerve." Ernest Hemingway once said of Huckleberry Finn: “If you read it, you must stop where the ****** Jim is stolen from the boys. That is the real end. The rest is just cheating.”