Author's National Edition. The Writings of Mark Twain. Volume XXV. Christian Science: With Notes Containing Corrections to Date

Samuel Langhorne Clemens (November 30, 1835 – April 21, 1910), better known by his pen name Mark Twain, was an American writer, entrepreneur, publisher and lecturer. Among his novels are The Adventures of Tom Sawyer (1876) and its sequel, Adventures of Huckleberry Finn (1885), the latter often called "The Great American Novel".