Columbia subject headings:
Biblioteca apostolica vaticana. Gabinetto delle stampe--Catalogs.
Cardinals--Portraits--Catalogs.
Engraving, Italian--Catalogs.
Harvard subject headings:
Biblioteca apostolica vaticana--Catalogs.
Cardinals--Portraits--Catalogs.
Prints--Vatican City--Catalogs.
Princeton subject headings:
Biblioteca apostolica vaticana Gabinetto delle stampe--Catalogs.
Cardinals--Portraits--Catalogs.
Catalogs.
Catholic Church--Clergy--Portraits--Catalogs.
Engraving, Italian--Themes, motives--Catalogs.
Engraving--Vatican City--Catalogs.
Portraits.