Columbia subject headings:
Germany, Northern--To 1500--In literature--Congresses.
Illustration of books--Germany--To 1500--Congresses.
Low German language--To 1500--History--Congresses.
Low German literature--To 1500--History and criticism--Congresses.
Low German literature--To 1500--Themes, motives--Congresses.
Scandinavia--To 1500--In literature--Congresses.
Harvard subject headings:
Art and literature--Germany--History--To 1500--Congresses.
Language and culture--Germany--History--To 1500--Congresses.
Low German language--To 1500--Congresses.
Low German literature--To 1500--History and criticism--Congresses.
Manuscripts, Low German--Congresses.
Princeton subject headings: