The Investiture Controversy: Church and Monarchy from the Ninth to the Twelfth Century (The Middle Ages Series)
"Synthesis of a high order. . . . A praisworthy accomplishment."—History, Reviews of New Books"The best introduction in English to the historiography, history, and central interpretive problems of the investiture controversy."—The Catholic Historical Review"Blumenthal . . . not only clarifies the course of the investiture controversy as such but also sets it satisfyingly in its wider and longer context."—American Historical Review