Columbia subject headings:
Art, Medieval--Congresses.
Artists' marks--Europe--History--To 1500--Congresses.
Artists, Medieval--Congresses.
Church decoration and ornament--Europe--History--To 1500--Congresses.
Harvard subject headings:
Art, Medieval
Artists' marks
Artists, Medieval
Artists--Europe--Social conditions.
Church decoration and ornament--Europe--History--To 1500.
Princeton subject headings:
Art, Medieval--Congresses.
Artists' marks--Europe--History--To 1500--Congresses.
Artists, Medieval--Congresses.
Church decoration and ornament--Europe--History--To 1500--Congresses.