Columbia subject headings:
Art, German--History.
Art, Medieval--Germany--History.
Art, Modern--History.
Christian art and symbolism--Germany--History.
Harvard subject headings:
Art, German--History--Congresses.
Art, Medieval--Germany--Congresses.
Art, Modern--Congresses.
Christian art and symbolism--Germany--History--Congresses.
Notre-Dame de Reims (Cathedral)--Congresses.
Princeton subject headings:
Art, German--History.
Art, Medieval--Germany--History.
Art, Modern--History.
Christian art and symbolism--Germany--History.