Columbia subject headings:
Art--Marketing--History--17th century.
Painting, Italian--Economic aspects--Italy--Venice--History--17th century.
Painting--Collectors and collecting--Spain--History--17th century.
Harvard subject headings:
Painting, Italian--Economic aspects--Italy--Venice--History--17th century.
Painting, Italian--Italy--Venice--Marketing--History--17th century.
Painting--Collectors and collecting--Spain--History--17th century.
Princeton subject headings:
Art dealers--Italy--Venice--Correspondence.
Art, European--17th century.
Art--Marketing--History--17th century.
Artists--Italy--Venice--Correspondence.
Spain--Commerce--Italy--Venice--History--17th century.
Venice (Italy)--Commerce--Spain--History--17th century.