In 1961, Marvel Comics editor/writer Stan Lee, artist Jack Kirby and several other illustrators produced a number of superhero titles which stressed character personalities and personal conflict as much as action and adventure, including The Fantastic Four, The Incredible Hulk and Spider-Man. The X-Men was one of the last titles of this Silver Age renaissance, appearing in September 1963. In the comic book series, the X-Men were founded by the paraplegic telepath Charles Xavier, also known as Professor X. Xavier gathered the X-Men under the cover of a "School for Gifted Youngsters" at a large country estate at 1407 Graymalkin Lane in Salem Center, a city in Westchester County, New York.