Columbia subject headings:
Art, Italian--16th century--Congresses.
Art, Italian--17th century--Congresses.
Diplomatic gifts--Italy--Congresses.
Diplomatic gifts--Spain--Congresses.
Italy--Foreign relations--Spain--History--Congresses.
Spain--Foreign relations--Italy--History--Congresses.
Harvard subject headings:
Art, Italian--16th century--Congresses.
Art, Italian--17th century--Congresses.
Ceremonial exchange--Italy--History--16th century--Congresses.
Ceremonial exchange--Italy--History--17th century--Congresses.
Ceremonial exchange--Spain--History--16th century--Congresses.
Ceremonial exchange--Spain--History--17th century--Congresses.
Diplomatic gifts--Italy--Congresses.
Diplomatic gifts--Spain--Congresses.
Gifts--Italy--History--16th century--Congresses.
Gifts--Italy--History--17th century--Congresses.
Gifts--Spain--History--16th century--Congresses.
Gifts--Spain--History--17th century--Congresses.
Italy--Foreign relations--Spain--History--Congresses.
Italy--Relations--Spain--Congresses.
Spain--Foreign relations--Italy--History--Congresses.
Spain--Relations--Italy--Congresses.
Princeton subject headings:
Art, Italian--16th century--Congresses.
Art, Italian--17th century--Congresses.
Diplomatic gifts--Italy--Congresses.
Diplomatic gifts--Spain--Congresses.
Italy--Foreign relations--Spain--History--Congresses.
Spain--Foreign relations--Italy--History--Congresses.