Paul Joannides is Emeritus Professor at the History of Art at the University of Cambridge. His publications include The Drawings of Raphael; Masaccio and Masolino; and Titian to 1518: The Assumption of Genius. Rick Scorza is a writer and lecturer on the Renaissance. In 2012 he was the inaugural Senior Thaw Research Fellow at the Drawing Institute of the Morgan Library & Museum, New York. He is also President of the British Museum's British Art Medal Society.