Columbia subject headings:
Harvard subject headings:
Art--Expertising--Congresses.
Morelli, Giovanni, 1816-1891--Congresses.
Princeton subject headings:
Art--Collectors and collecting--Italy--Congresses.
Art--Expertising--Italy--Congresses.
Morelli, Giovanni, 1816-1891--Art collections--Congresses.
Morelli, Giovanni, 1816-1891--Congresses.