Instructor's Manual - The Second Crusade: The War Council of Acre, 1148

From the Introduction: The debates are informed by St. Augustine’s writings, especially City of God, documents from the Investiture Controversy, and selections from various other historical sources about the Second Crusade and the crusader states, including William of Tyre, Odo of Deuill, Otto of Freising, Usamah ibn Munqidth, and Ibn al-Qalanisi.