Columbia subject headings:
Christian pilgrims and pilgrimages--Italy--Rome--History.
Holy Year--History.
Rome (Italy)--Church history.
Harvard subject headings:
Christian pilgrims and pilgrimages--Italy--Rome.
Holy Year--History.
Rome (Italy)--Church history.
Princeton subject headings:
Christian pilgrims and pilgrimages--Italy--Rome.
Holy Year $x History.
Rome (Italy)--Church history.