8.1 Piero della Francesca, Virgin and Child Enthroned with Four Angels. Image courtesy Clark Art Institute. Clarkart@edu 156
8.2 Altar Chapel of San Leonardo or Monacato, Cloister of the Cathedral, Sansepolcro. Printed with the kind permission of Enzo Mattei 158
8.3 Gherardi Palace, Sansepolcro. Printed with the kind permission of Enzo Mattei 160