The Sketch Book of Geoffrey Crayon, Gent., commonly referred to as The Sketch Book, is a collection of 34 essays and short stories written by American author Washington Irving. It was published serially throughout 1819 and 1820. The collection includes two of Irving's best-known stories, attributed to the fictional Dutch historian Diedrich Knickerbocker, "The Legend of Sleepy Hollow" and "Rip Van Winkle". It also marks Irving's first use of the pseudonym "Geoffrey Crayon", which he would continue to employ throughout his literary career.