Columbia subject headings:
Durham (England : County)--Pictorial works--Exhibitions.
England--In art--Exhibitions.
Landscapes in art--England--Exhibitions.
Northumberland (England)--Pictorial works--Exhibitions.
Watercolor painting, English--18th century--Exhibitions.
Watercolor painting, English--19th century--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Durham (England : County)--Pictorial works--Exhibitions.
Northumberland (England)--Pictorial works--Exhibitions.