NICHOLAS DAY is the author of The Mona Lisa Vanishes, winner of the Robert F. Sibert Award and the Boston Globe-Horn Book Award for nonfiction. His debut picture book, Nothing: John Cage and 4’33”, was illustrated by Chris Raschka. He has written regularly for Slate; his work has also appeared in the Atlantic, the New York Times, and the Washington Post, among other publications. He lives in Western Massachusetts with his family.