Columbia subject headings:
Archives--Portugal--Lisbon.
Libraries--Portugal--Lisbon.
Museums--Portugal--Lisbon.
Harvard subject headings:
Archives--Portugal--Lisbon.
Libraries--Portugal--Lisbon.
Museums--Portugal--Lisbon.
Princeton subject headings:
Archives--Portugal--Lisbon--Periodicals.
Libraries--Portugal--Lisbon--Periodicals.
Museums--Portugal--Lisbon--Periodicals.