Columbia subject headings:
Baudelaire, Charles, 1821-1867.
Cladel, Léon, 1835-1892.
Harvard subject headings:
Baudelaire, Charles, 1821-1867
Cladel, Léon, 1835-1892.
Princeton subject headings:
Baudelaire, Charles, 1821-1867.
Cladel, Léon, 1835-1892.