Columbia subject headings:
Musicians--Germany--Biography.
Wagner, Siegfried, 1869-1930.
Harvard subject headings:
Composers--Germany--Biography
Musicians--Germany--Biography
Wagner, Siegfried, 1869-1930
Princeton subject headings:
East Asia--Description and travel.
Italy--Description and travel.
Musicians--Biography.
Wagner, Richard, 1813-1883.
Wagner, Siegfried, 1869-1930.