Columbia subject headings:
Prints, European--Catalogs.
Velletri (Italy)--History.
Velletri (Italy)--In art--Catalogs.
Harvard subject headings:
Prints, European--Catalogs.
Velletri (Italy)--History.
Velletri (Italy)--In art--Catalogs.
Princeton subject headings:
Catalogs.
Prints, European--Catalogs.
Velletri (Italy)--History.
Velletri (Italy)--In art--Catalogs.