Columbia subject headings:
Harvard subject headings:
Chopin, Frédéric, 1810-1849. Correspondence.
Piano music
Sand, George, 1804-1876. Correspondence
Princeton subject headings:
Chopin, Frédéric, 1810-1849. Correspondence.
Composers--France--Correspondence.
Novelists, French--19th century--Correspondence.
Sand, George, 1804-1876. Correspondence.