Columbia subject headings:
Artists' preparatory studies--Exhibitions.
Oil sketches--17th century--Exhibitions.
Rubens, Peter Paul, 1577-1640--Exhibitions.
Harvard subject headings:
Artists' preparatory studies--Exhibitions.
Oil sketches--17th century--Exhibitions.
Oil sketches.
Rubens, Peter Paul, 1577-1640--Criticism and interpretation.
Rubens, Peter Paul, Sir, 1577-1640--Exhibitions.
Princeton subject headings:
Oil sketches.
Rubens, Peter Paul, Sir, 1577-1640--Criticism and interpretation.