Columbia subject headings:
Cities and towns, Medieval--Italy, Southern--History--Congresses.
Italy, Southern--Description and travel--Congresses.
Harvard subject headings:
Cities and towns, Medieval--Italy, Southern--History--Congresses.
Italy, Southern--Description and travel--Congresses.
Princeton subject headings:
Cities and towns, Medieval--Italy, Southern--History--Congresses.
Italy, Southern--Description and travel--Congresses.