History of the City of Rome in the Middle Ages, Volume 1, Book 1, 400-568

The standard reference on medieval Rome both for its comprehensive narrative scope and for its depth of detail and use of primary sources. It remains a basic reference for Roman political, religious, and cultural studies and is a landmark in historical writing in its own right. It thus offers the most comprehensive introduction and companion guide to the City and its developing history from late Antiquity to the Renaissance.