Columbia subject headings:
Painters--Italy--Siena.
Painting, Gothic--Italy--Siena--Catalogs.
Painting, Italian--Netherlands--Catalogs.
Harvard subject headings:
Painting, Italian--Italy--Siena--Catalogs.
Painting, Italian--Netherlands--Catalogs.
Painting, Italian--Netherlands.
Panel painting, Italian--Netherlands.
Princeton subject headings:
Painting, Italian--Collectors and collecting--Netherlands--Catalogs.
Painting, Italian--Italy--Siena--Catalogs.