Timothy Verdon is Director of the Museo dell'Opera del Duomo and Professor of Art History at the Stanford University Florence Center. He is Canon of Florence Cathedral and Director of the Office for Church Heritage of the Archdiocese of Florence. His publications include
Francesco d'Assis negli Affreschi di Giotto, and the three-volume
La cattedrale e la citta
saggi sul Duomo di Firenze. Atti del VII centenario del Duomo di Firenze, for which he was co-editor.
Daniel M. Zolli is a doctoral candidate in Harvard's History of Art and Architecture Department, where he is completing a dissertation on Donatello's workshops.
Amy R. Bloch is Assistant Professor of Art History at the University at Albany, State University of New York (SUNY). She has published essays on Ghiberti, Donatello, and the decoration of the Florence baptistery, and her book on Ghiberti's Gates of Paradise is forthcoming with Cambridge University Press.
Marco Ciatti is Superintendent of the Opificio delle Pietre Dure, an institution of the Italian Ministry of Culture and world leader in the field of art restoration. He is also director of the Opificio's Conservation Laboratory for Easel Paintings and Textiles and teaches history and theory of conservation.
Stefano Nicastri is an architect and art historian who has collaborated for many years with the Italian Ministry of Culture's Istituto Centrale per il Catalogo e la Documentazione in the areas of Renaissance and Baroque art and architecture.