Sarah GuérinSarah M. Guérin is Assistant Professor of Medieval Art at the University of Pennsylvania. Her research examines medieval ivory carving and has focused on the inter-regional trade networks that enabled exchange, work that has appeared in such journalsas the Journal of Medieval History, al-Masaq, and The Medieval Globe. She is presently working on a monograph treating the first century of Gothic ivory carving called Ivory Palaces: Material, Belief, and Desire in Gothic Sculpture. Read More Read Less