CLAYTON, Martin. British, b. 1967. Genres: Art/Art history. Career: Royal Library, Windsor Castle, England, assistant curator of Print Room, 1990-. Publications: (with R. Philo) Leonardo da Vinci: The Anatomy of Man, 1992; Seven Florentine Heads, 1993; Poussin: Works on Paper, 1995; Leonardo da Vinci: A Curious Vision, 1996. Address: Royal Library, Windsor Castle, London SL4 1NY, England.