Columbia subject headings:
Art--Collectors and collecting--Italy--History.
Niello--History.
Niello--Private collections--Italy--History.
Trivulzio family--Art collections.
Harvard subject headings:
Art--Collectors and collecting--Italy--History.
Niello--History.
Niello--Private collections--Italy--History.
Trivulzio family--Art collections.
Princeton subject headings:
Art--Collectors and collecting--Italy--History.
Niello--History.
Niello--Private collections--Italy--History.
Trivulzio family--Art collections.