Columbia subject headings:
Harvard subject headings:
Drawing, Italian--17th century--Exhibitions.
Drawing, Italian--18th century--Exhibitions.
Istituto nazionale per la grafica (Italy)--Exhibitions.
Osio, Umberto, 1891-1967--Art collections--Exhibitions.
Princeton subject headings:
Artists' preparatory studies--Italy--Exhibitions.
Drawing, Italian--17th century--Exhibitions.
Drawing, Italian--18th century--Exhibitions.
Istituto nazionale per la grafica (Italy)--Exhibitions.
Osio, Umberto, 1891-1967--Art collections--Exhibitions.