Columbia subject headings:
Wagner, Minna, 1809-1866.
Wagner, Richard, 1813-1883.
Harvard subject headings:
Wagner, Minna (Planer), 1809-1886.
Wagner, Minna, 1809-1866.
Wagner, Richard, 1813-1883
Wagner, Richard, 1813-1883. Correspondence
Princeton subject headings:
Composers--Germany--Correspondence.
Wagner, Minna, 1809-1866--Correspondence.
Wagner, Richard, 1813-1883. Correspondence.