Columbia subject headings:
Lindeman, Marie von, 1818-1903.
Schumann, Clara, 1819-1896--Friends and associates.
Steffens, Emilie, 1830-1910.
Harvard subject headings:
Lindeman, Marie von, 1818-1903--Correspondence.
Schumann, Clara, 1819-1896--Correspondence.
Schumann, Clara, 1819-1896--Friends and associates.
Steffens, Emilie, 1830-1910--Correspondence.
Princeton subject headings:
Lindeman, Marie von, 1818-1903.
Schumann, Clara, 1819-1896--Friends and associates.
Steffens, Emilie, 1830-1910.