Columbia subject headings:
Nicholas V, Pope, 1397-1455--Congresses.
Harvard subject headings:
Nicholas V, Pope, 1397-1455--Congresses.
Papacy--History--1447-1565--Congresses.
Popes--Art patronage--Congresses.
Princeton subject headings:
Nicholas V, Pope, 1397-1455--Congresses.
Popes--Biography--Congresses.