Columbia subject headings:
Ceremonial exchange in literature--Congresses.
Gifts in literature--Congresses.
Literature and society--History--Congresses.
Harvard subject headings:
Ceremonial exchange in literature--Congresses.
Gifts in literature--Congresses.
Literature and society--History--Congresses.
Princeton subject headings:
Ceremonial exchange in literature--Congresses.
Gifts in literature--Congresses.
Literature and society--History--Congresses.