Columbia subject headings:
Watercolor painting, European--19th century--Exhibitions.
Watercolor painting, European--20th century--Exhibitions.
Harvard subject headings:
Watercolor painting, Italian--Italy, Northern--19th century--Exhibitions.
Watercolor painting, Italian--Italy, Northern--20th century--Exhibitions.
Princeton subject headings:
Watercolor painting, Italian--Italy, Northern--19th century--Exhibitions.
Watercolor painting, Italian--Italy, Northern--20th century--Exhibitions.