This volume, which appears thirty years after its predecessor, marks the very welcome resumption of the publication of the diplomatic and administrative correspondence of Pope Innocent vi. It covers Innocent's fifth pontifical year (1356–7) and contains for the most part letters issued on the initiative of the pope or his government, as opposed to those issued in response to petitions. The volume prints or calendars more than 700 letters, beginning with a letter addressed to Cardinal Albornoz, papal legate in Italy. His legation, and that of his fellow-legate, Cardinal Androin de la Roche, features prominently in the volume, as do the Iberian kingdoms, the hostilities between the kings of France and England, and the more routine financial business of the apostolic chamber. The drafts of many of the letters published here survive in the Vatican Archives, either in the large collection of drafts that make up Reg. Vat. 244A-N or in the Instrumenta Miscellanea. The drafts show alterations not just of style but also of substance – reflecting the process of the redaction of the letters in changing political circumstances. The present edition provides cross-references to these drafts, where they can be traced, thus drawing the attention of historians to a source of great potential interest. The editors appear to have achieved a very high standard of accuracy, and the volume has been elegantly produced.