Columbia subject headings:
Drawing, Spanish--Exhibitions.
Witt, Robert Clermont, Sir, 1872-1952--Art collections--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Drawing, Spanish--Exhibitions.
Drawing--16th century--Spain--Exhibitions.
Drawing--17th century--Spain--Exhibitions.
Drawing--18th century--Spain--Exhibitions.
Witt, Robert Clermont, Sir, 1872-1952.