Columbia subject headings:
Harvard subject headings:
Names, Geographical--Italy--History--Congresses.
Street names--History--Congresses.
Toponymy
Toponymy--Italy--History--Congresses.
Princeton subject headings:
Cities and towns--Congresses.
Cities and towns--France--Congresses.
Cities and towns--Italy--Congresses.
Names, Geographical--Congresses.
Names, Geographical--France--Congresses.
Names, Geographical--Italy--Congresses.