Columbia subject headings:
Drawing, Italian--Italy--Genoa--17th century.
Drawing, Italian--Italy--Genoa--18th century.
Drawing--Expertising.
Underdrawing.
Harvard subject headings:
Drawing, Italian--Italy--Genoa.
Underdrawing.
Princeton subject headings:
Drawing, Italian--Italy--Genoa--17th century.
Drawing, Italian--Italy--Genoa--18th century.
Drawing--Expertising.
Underdrawing.