This author included letters allegedly written by “Mustapha Rub-a-Dub Keli Khan” in a periodical he founded with the “Lads of Kilkenny.” This author advertised one of his books by claiming to be a hotel owner who would publish a missing guest’s manuscript if his bill wasn’t paid. This author’s biography of Christopher Columbus was a source of the belief that medieval people believed the Earth was flat. (15[1])This author popularized both many American Christmas traditions and (15[1])the nickname (*) “Gotham” in a History (10[1])of New York. This author included a character who watches the ghostly crew of Henry Hudson playing ninepins in his collection The Sketch Book of Geoffrey Crayon. For 10 points, what author used the pseudonym Diedrich Knickerbocker for a story about a man who sleeps for twenty years, titled “Rip Van Winkle?” ■END■