Columbia subject headings:
Biblioteca ambrosiana--Exhibitions.
Drawing, Italian--15th century--Exhibitions.
Drawing, Italian--16th century--Exhibitions.
Drawing, Renaissance--Italy--Exhibitions.
Drawing--Italy--Milan--Exhibitions.
Leonardo, da Vinci, 1452-1519--Exhibitions.
Harvard subject headings:
Drawing, Italian--15th century--Exhibitions.
Drawing, Renaissance--Exhibitions.
Leonardo, da Vinci, 1452-1519--Exhibitions.
Princeton subject headings:
Biblioteca ambrosiana--Exhibitions.
Drawing, Italian--15th century--Exhibitions.
Drawing, Italian--16th century--Exhibitions.
Drawing, Renaissance--Italy--Exhibitions.
Drawing--Italy--Milan--Exhibitions.
Leonardo, da Vinci, 1452-1519--Exhibitions.