David Hempton is Dean of the Faculty of Divinity, Alonzo L. McDonald Family Professor of Evangelical Theological Studies, and John Lord O'Brian Professor of Divinity at Harvard Divinity School.
Hugh McLeod is Emeritus Professor of Church History at the University of Birmingham. He is a historian specializing in the religious history of 19th and 20th century. His publications include The Religious Crisis of the 1960s (2007) and Religion and the People of Western Europe 1789-1990, Second Edition (1997).