Samuel Langhorne Clemens (1835-1910),better known by his pen name Mark Twain, was an American author and humorist most famous for his The Adventures of Tom Sawyer (1876) and its sequel, Adventures of Huckleberry Finn (1885). After working as a typesetter, a riverboat pilot and a miner, he started writing for the Virginia City Territorial Enterprise, and by 1865 had achieved his first success with his internationally-acclaimed "The Celebrated Jumping Frog of Calaveras County." His writings became the standard by which all great American authors came to be measured, and is widely regarded as the father of American literature.