Columbia subject headings:
Harvard subject headings:
Chopin, Frédéric, 1810-1849
Chopin, Frédéric, 1810-1849--Anniversaries, etc.
Chopin, Frédéric, 1810-1849--Congresses.
Princeton subject headings:
Chopin, Frédéric, 1810-1849--Anniversaries, etc.
Chopin, Frédéric, 1810-1849.