Columbia subject headings:
Archivio vaticano--Catalogs.
Biblioteca apostolica vaticana--Catalogs.
Landi family--Archives--Catalogs.
Harvard subject headings:
Archivio vaticano--Catalogs.
Biblioteca apostolica vaticana--Catalogs.
Landi family--Archives--Catalogs.
Princeton subject headings:
Archivio vaticano--Catalogs.
Biblioteca apostolica vaticana--Catalogs.
Landi family--Archives--Catalogs.