"TWAIN, MARK" (SAMUEL LANGHORNE CLEMENS), D.Litt. (1835). —American humorist. The Jumping Frog (1867), The Innocents Abroad (1869), Roughing It (1872), Sketches New and Old (1873), Adventures of Tom Sawyer (1876), A Tramp Abroad (1880), The Prince and the Pauper (1880), Life on the Mississippi (1883), Huckleberry Finn (1885), The American Claimant (1892), Tom Sawyer Abroad (1894), Christian Science (1907), etc.