Jeffrey Hamburger is a scholar of medieval German art, with a special emphasis upon religious imagery, monastic culture, manuscript production in the high Middle Ages, and the role and theory of diagrams from antiquity to modernity. Among his many monographs and edited volumes are Nuns as Artists: The Visual Culture of a Medieval Convent (University of California Press, 1998), St. John the Divine: The Deified Evangelist in Medieval Art and Theology (University of California Press, 2002), Color in Cusanus (Hiersemann Verlag, 2021), The Mind’s Eye: Art and Theological Argument in the Medieval West (Princeton University Press, 2005, with Anne-Marie Bouché), and The Prayer Book of Ursula Begerin (Zürich-Dietikon: Urs Graf Verlag, 2015, with Nigel Palmer).