Columbia subject headings:
Artists' preparatory studies--Conservation and restoration--Italy--Orvieto--Exhibitions.
Franceschini, Marcantonio, 1648-1729--Exhibitions.
Harvard subject headings:
Artists' preparatory studies--Conservation and restoration--Italy--Orvieto--Exhibitions.
Drawing--Italy--Orvieto--Exhibitions.
Franceschini, Marcantonio, 1648-1729--Exhibitions.
Princeton subject headings: