Modern Hagiography
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
Our Birthday Bouquet Culled from the Shrines of the Saints and the Gardens of the Poets by Eleanor C. Donnelly.
Miniature Lives of the Saints for Every Day in the Year
Memorials of the Blessed: A Series of Short Lives of the Saints by Charles B. Fairbanks.
Saints and Heroes to the End of the Middle Ages by George Hodges.
Medieval Hagiography
Breviarium Romanum – Latin & English.
Writings of Pope Gregory VII
Letter to Hermann, Bishop of Metz
Four letters from the Epistolae vagantes
Gregory VII calls for a crusade
Documents Relating to the War of Investiture
Art & Architecture
Catalogo generale dei beni culturali
POP : la plateforme ouverte du patrimoine
Tomb of Gregory VII in Salerno Cathedral
Lives and Legends of the English Bishops and Kings, Mediaeval Monks, and Other Later Saints by Mrs. Arthur Bell.
Customs & Devotions
Nihil sub sole novum 
