Task: Text Categorization
Input (English): One of this man's title characters learns that Shakespeare is forced to walk behind a "common tailor from Tennessee" named Billings, while in a novel of his, a man invents the Cursing Phonograph and another character pretends to be the outlaw One-Armed Pete. That novel was intended as a sequel, but the protagonist's name had to be changed to "Mulberry" after a lawsuit from a man who shared a name with the original character. That character first appeared in a novel where the fall of Senator Dilworthy and the murder trial of Laura dash Washington Hawkins's scheme to profit from establishing a black college. This author of  "Captain Stormfield's Visit To Heaven" and "The Private History of a Campaign that Failed" wrote the quite-posthumouly published play "Is He Dead" as well as a satire on the Congo called "King Leopold's Soliloquy," though he may be better known for such novels as one subtitled "A Tale of Today" and co-written with Charles Dudley Warner, "The Gilded Age. " For 10 points, name this creator of Injun Joe, Hank "The Boss" Morgan, an amphibian from Calaveras County, and Tom Sawyer.
Output (English): Literature