Columbia subject headings:
German literature--19th century--History and criticism.
Wagner, Richard, 1813-1883--Sources.
Wagner, Richard, 1813-1883. Tannhäuser.
Harvard subject headings:
Wagner, Richard, 1813-1883--Sources.
Wagner, Richard, 1813-1883. Tannhäuser.
Princeton subject headings:
Wagner, Richard, 1813-1883--Sources.
Wagner, Richard, 1813-1883. Tannhäuser.