Columbia subject headings:
Artists' materials--Congresses.
Illumination of books and manuscripts--History--Congresses.
Harvard subject headings:
Artists' materials--Congresses.
Codicology--Congresses.
Illumination of books and manuscripts--History--Congresses.
Manuscripts, Medieval--Congresses.
Princeton subject headings:
Artists' materials--Congresses.
Illumination of books and manuscripts--History--Congresses.