A Companion to the Medieval Papacy (Online) by Atria Larson (Editor); Keith Sisson (Editor)Topics covered include: the Papal States; the Gregorian Reform; papal artistic self-representation; hierocratic theory; canon law; decretals; councils; legates and judges delegate; the apostolic camera, chancery, penitentiary, and Rota; relations with Constantinople; crusades; and missions.
A Short History of the Papacy in the Middle Ages by Walter UllmannThis classic text outlines the development of the Papacy as an institution in the Middle Ages. The focus of this survey is on the institution and the idea of papacy rather than individual figures, recognizing the shaping power of the popes' roles that made them outstanding personalities.
The Medieval Papacy by Brett WhalenA concise history that is aimed at a general audience and attempts to mediate between earlier competing visions of what the medieval papacy was.
The Papacy, 1073-1198 (Online) by I. S. RobinsonA study of the transformation of the role of the pope in the late eleventh and twelfth centuries, from which he emerged as monarch of the universal Church, dedicated to reform and to making the Church independent of secular control.