Columbia subject headings:
Harvard subject headings:
Letter-pictures--Congresses.
Literature, Medieval--History and criticism--Congresses
Picture-writing--Congresses.
Visual literature--History and criticism--Congresses.
Visual poetry--History and criticism--Congresses.
Princeton subject headings:
Letter-pictures--Congresses.
Literature, Medieval--History and criticism--Congresses.
Picture-writing--Congresses.
Visual literature--History and criticism--Congresses.
Visual poetry--History and criticism--Congresses.