Columbia subject headings:
Archives--Portugal--Catalogs.
Pernambuco (Brazil)--History--Sources.
Harvard subject headings:
Archives--Portugal--Catalogs.
Pernambuco (Brazil)--History--Sources.
Pernambuco, Brazil (State)--History--Sources.
Princeton subject headings:
Archives--Portugal--Catalogs.
Catalogs.
Pernambuco, Brazil (State)--History--Sources.