2. Boston Public Library, MS pb Med.170 Title: Single leaf from a 13th-century gradual : in Latin]. Author: Catholic Church Place: Bologna Date: ca. 1275
3. Boston Public Library, MS pb Med.178 Title: Single leaf from a 13th-century antiphonal : in Latin]. Author: Catholic Church Place: Bologna Date: ca. 1275
4. Free Library of Philadelphia, Lewis E 1 Title: De amore Dei Author: Albertanus of Brescia and Leo Archpriest Place: Bologna Date: 1275-1299
5. Free Library of Philadelphia, Lewis E 244 Title: Infortiatum Author: Justinian I and Accursius Place: Bologna Date: 1270-1280
6. Free Library of Philadelphia, Lewis E M 26:1 Title: Corpus iuris civilis Place: Bologna Date: 1250-1299
9. Free Library of Philadelphia, Lewis E M 48:12-13 Title: Corpus iuris civilis Place: Bologna Date: 1290-1310