Interdisciplinary studies in the conceptualization and exercise of authority and power in the medieval Church.

Through careful analysis of the Romanesque cathedral of Molfetta (in Apulia, southern Italy), Williams demonstrates how the commercial boom of the medieval Mediterranean changed the way churches were funded, designed, and built.

This books describes the life of Elisa ben Abraham Cresques, known to many as the author of the Catalan Atlas, and focuses on the Jewish aspects of his fascinating career, his professional profile, and his scholarship.