Columbia subject headings:
Art objects--Private collections.
Portland, Margaret Cavendish Holles Harley Bentinck, Duchess of, 1715-1785.
Harvard subject headings:
Art objects--Private collections
Portland, Margaret Cavendish Holles Harley, duchess of, 1714-1785.
Princeton subject headings:
Art objects--Private collections.
Portland, Margaret Cavendish Holles Harley Bentinck, Duchess of, 1715-1785.