Emidio Campi is professor of church history and director of the Institute for Swiss Reformation History at the University of Zurich. His research has centered mainly on the Swiss Reformation and Reformed Protestantism in early modern Europe. Among his publications are Heinrich Bullinger und seine Zeit; and Architect of Reformation: An Introduction to Heinrich Bullinger, 1504–1575 (with Bruce Gordon). He is general editor of a series of Bullinger’s works. Joseph Cumming McLelland is McConnell Professor of Philosophy of Religion Emeritus, McGill University, Montreal, and Robert Professor of the History and Philosophy of Religion and Christian Ethics Emeritus, The Presbyterian College, Montreal; he was dean of the faculty of religious studies at McGill University from 1975 to 1985. He continues to act as a general editor of the Peter Martyr Library.