Brian Allen is director of studies at the Paul Mellon Centre for Studies in British Art. John Baskett is an independent scholar and former art advisor to Paul Mellon. His is author of The Horse in Art (Yale). Jules Prown, Paul Mellon Professor Emeritus of the History of Art, Yale University, was the founding director of the Yale Center for British Art, 1968-76. William Reese is an antiquarian bookseller based in New Haven. Duncan Robinson is director of the Fitzwilliam Museum and Master of Magdalen College, Cambridge University.