Gratian the Theologian John C Wei Catholic University of America Press, Washington, DC, 2016, Studies in Medieval and Early Modern Canon Law 13, xviii + 354 (hardback £59.95) ISBN: 978-0-8132-2803-7 - Gratian's Tractatus de Penitentia: A New Latin Edition with English Translation Atria A Larson Catholic University of America Press, Washington, DC, 2016, Studies in Medieval and Early Modern Canon Law 14, xlviii + 312 (hardback £59.95) ISBN: 978-0-8132-2867-9