Columbia subject headings:
Harvard subject headings:
Composers--Germany--Biography
Gound, Robert.
Hornstein, Robert von, 1833-1890.
Wagner, Richard, 1813-1883
Princeton subject headings:
Composers--Germany--Biography.
Composers--Germany--Correspondence.
Gound, Robert.
Hornstein, Robert von, 1833-1890.
Wagner, Richard,--Correspondence.