Roger S. Bagnall is Professor of Ancient History and Leon Levy Director, emeritus, at the Institute for the Study of the Ancient World, New York University, as well as Jay Professor of Greek and Latin and Professor of History, emeritus, at Columbia University. He is the director of the excavations at Amheida and a co-author of the accompanying volume An Oasis City (2015). He is a Corresponding Fellow of the British Academy.