Columbia subject headings:
Art patronage--Italy--History--Congresses.
Art, Italian--Congresses.
Cardinals--Italy--History--Congresses.
Harvard subject headings:
Art patronage--Italy--Congresses.
Art patronage--Italy--History--Congresses.
Art patrons--Italy--Congresses.
Cardinals--Italy--Art patronage--Congresses.
Cardinals--Italy--History--Congresses.
Catholic Church--Art patronage--Congresses.
Princeton subject headings:
Art patronage--Italy--History--Congresses.
Art, Italian--Congresses.
Cardinals--Italy--History--Congresses.