Crusade and Christendom. Annotated documents in translation from Innocent III to the fall of Acre, 1187–1291. Edited by Jessalynn Bird, Edward Peters and James M. Powell. (The Middle Ages.) Pp. xxii+512 incl. 6 maps. Philadelphia: University of Pennsylvania Press, 2013. £49 (75). 978 0 8122 4478 6 - Housley, Norman (The journal of ecclesiastical history, 2014)