Columbia subject headings:
Harvard subject headings:
Art--Collectors and collecting--Italy--History--Congresses.
Art--Economic aspects--Italy--History--Congresses.
Art--Italy--Marketing--History--Congresses.
Princeton subject headings:
Art, Baroque--Italy--Economic aspects.
Art, Renaissance--Italy--Economic aspects.
Art--Collectors and collecting--Italy--History--15th century.
Art--Collectors and collecting--Italy--History--16th century.
Art--Collectors and collecting--Italy--History--17th century.
Art--Italy--Marketing.