Olivia Remie Constable (1960-2014) was the Robert M. Conway Director of the Medieval Institute and Professor of History at the University of Notre Dame. She was author of Trade and Traders in Muslim Spain: The Commercial Realignment of the Iberian Peninsula 900-1500 and Housing the Stranger in the Mediterranean World: Lodging, Trade, and Travel in Late Antiquity and the Middle Ages. Medieval Iberia: Readings from Christian, Muslim, and Jewish Sources, her monumental collection of primary source material, is also available from the University of Pennsylvania Press. Robin Vose is Professor of History at St. Thomas University, New Brunswick, Canada. David Nirenberg is the Deborah R. and