Columbia subject headings:
Art, Italian--16th century.
Art, Italian--17th century.
Art--Collectors and collecting--Italy--History--16th century.
Art--Collectors and collecting--Italy--History--17th century.
Italy--Relations--Spain.
Spain--Relations--Italy.
Harvard subject headings:
Art, Italian--Italy--17th century--Congresses.
Art--Collectors and collecting--Italy--History--17th century--Congresses.
Italy--Relations--Spain--Congresses.
Spain--Relations--Italy--Congresses.
Princeton subject headings:
Art, Italian--16th century.
Art, Italian--17th century.
Art--Collectors and collecting--Italy--History--16th century.
Art--Collectors and collecting--Italy--History--17th century.
Italy--Relations--Spain.
Spain--Relations--Italy.