Columbia subject headings:
Decoration and ornament--Germany--Art nouveau.
Glass painting and staining--Germany--History--19th century.
Glass painting and staining--Germany--History--20th century.
Harvard subject headings:
Decoration and ornament--Germany--Art nouveau.
Glass painting and staining--Germany--History--19th century.
Glass painting and staining--Germany--History--20th century.
Princeton subject headings:
Decoration and ornament--Germany--Art nouveau.
Glass painting and staining--Germany--History--19th century.
Glass painting and staining--Germany--History--20th century.