Epistles of Gregory VII.; Baronius’s Annals; Dupin’s Ecclesiastical History; Voigt, in his Hildebrand als Gregory VII.; Guizot’s Lectures on Civilization; Sir James Stephens’s article on Hildebrand, in Edinburgh Review; Dugdale’s Monasticon; Hallam’s Middle Ages; Digby’s Ages of Faith; Jaffe’s Regesta Pontificum Romanorum; Mignet’s series of articles on La Lutte des Papes contre les Empereurs d’Allemagne; M. Villemain’s Histoire de Gregoire VII.; Bowden on the Life and Times of Hildebrand; Milman’s Latin Christianity; Wattcrich’s Romanorum Pontificum ab Æqualibus Conscriptæ; Platina’s Lives of the Popes; Stubbs’s Constitutional History; Lee’s History of Clerical Celibacy; Cardinal Newman’s Essays; Lecky’s History of European Morals; Dr. Dollinger’s Church History; Neander’s Church History; articles in Contemporary Review of July and August, 1882, on the Turning Point of the Middle Ages.
