Columbia subject headings:
Christianity and other religions--Islam--Exhibitions.
Church work with prisoners--Catholic Church--History--Exhibitions.
Church work with prisoners--Portugal--Lisbon--History--Exhibitions.
Convento da Santíssima Trindade de Lisboa (Lisbon, Portugal)--History--Exhibitions.
Crusades--Prisoners and prisons--Exhibitions.
Islam--Relations--Christianity--Exhibitions.
Lisbon (Portugal)--Church history--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Christianity and other religions--Islam--Exhibitions.
Church work with prisoners--Catholic Church--History--Exhibitions.
Church work with prisoners--Portugal--Lisbon--History--Exhibitions.
Convento da Santíssima Trindade de Lisboa (Lisbon, Portugal)--History--Exhibitions.
Crusades--Prisoners and prisons--Exhibitions.
Islam--Relations--Christianity--Exhibitions.
Lisbon (Portugal)--Church history--Exhibitions.