Columbia subject headings:
Bayreuther Festspiele.
Hitler, Adolf, 1889-1945--Friends and associates.
Music and state--Germany--20th century.
Opera producers and directors--Germany--Bayreuth--Biography.
Wagner, Winifred.
Harvard subject headings:
Bayreuther Festspiele.
Hitler, Adolf, 1889-1945--Friends and associates.
Music and state--Germany--History--20th century.
Opera producers and directors--Germany--Bayreuth--Biography.
Wagner, Winifred.
Princeton subject headings:
Bayreuther Festspiele.
Hitler, Adolf, 1889-1945--Friends and associates.
Music and state--Germany--20th century.
Wagner family.
Wagner, Winifred.