Keywords
- Service books (Music)--Catholic Church1
- Sixtus IV, Pope, 1414-14841
- Spain--Catalonia1
- Spain--Seo de Urgel1
- Spain--Zaragoza1
- Statutes1
- Trapez, Jacobus1
- Vellum printings1
- Wesel, Johann Ruchart von, approximately 1425-14811
- Wooden boards1
- Wycliffe, John, -13841
- annotations1
- breviaries1
- bulls (papal records)1
- choirbooks1
- chronicles1
- decorated initials1
- decrees1
- devotional calendars1
- diagrams1