Columbia subject headings:
Catholic Church--Liturgy--History--Congresses.
Memorial rites and ceremonies--History--Congresses.
Harvard subject headings:
Catholic Church--Liturgy--History--Congresses.
Memorial rites and ceremonies--History--Congresses.
Princeton subject headings:
Catholic Church--Doctrines--History.
Civilization, Medieval.
Monasticism and religious orders.
Saints--Commemoration.
Sepulchral monuments.