Columbia subject headings:
Harvard subject headings:
Books and reading--Social aspects--History--Congresses.
Books--History--400-1450--Congresses.
Illumination of books and manuscripts, Medieval--Congresses.
Manuscripts, Medieval--Social aspects--Congresses.
Written communication--Social aspects--Congresses.
Princeton subject headings:
Books--Europe--History--To 400.
Literature, Ancient--Manuscripts.
Manuscripts--Europe--History.