Columbia subject headings:
Harvard subject headings:
Naples (Kingdom)--History--Spanish rule, 1442-1707--Congresses.
Sardinia (Italy)--History--Aragonese and Spanish rule, 1297-1708--Congresses.
Sicily (Italy)--History--1282-1409--Congresses.
Spaniards--Italy--Naples (Kingdom)--Politics and government--Congresses.
Spaniards--Italy--Sardinia--Politics and government--Congresses.
Spaniards--Italy--Sicily--Politics and government--Congresses.
Princeton subject headings:
Aragon (Spain)--History--Congresses.
Aragon (Spain)--Relations--Italy--Congresses.
Italy--Relations--Spain--Aragon--Congresses.