Columbia subject headings:
Colnaghi (Gallery)
Painting--Collectors and collecting--United States.
Harvard subject headings:
Art dealers--United States--Catalogs.
Colnaghi (Gallery)--Catalogs.
Painting, European--Catalogs.
Painting--Collectors and collecting--United States--Catalogs.
Princeton subject headings:
Colnaghi (Gallery)
Painting--Collectors and collecting--United States.