Columbia subject headings:
Music publishing--Germany--19th century.
Wagner, Richard, 1813-1883--Correspondence.
Wagner, Richard, 1813-1883.
Harvard subject headings:
B. Schott's Söhne (Mainz, Rhineland-Palatinate, Germany)
Schott's Söhne, B. firm. music publishers, Mainz.
Wagner, Richard, 1813-1883
Princeton subject headings:
Schott's Söhne, B., firm, music publishers, Mainz.
Wagner, Richard, 1813-1883.