Columbia subject headings:
Art dealers--France--Biography.
Cubism--France.
Rosenberg, Léonce, 1879-1947.
World War, 1914-1918--Art and the war.
Harvard subject headings:
Cubism--France--Paris.
Galerie L'Effort Moderne (Paris, France)
Princeton subject headings:
Art dealers--France--Biography.
Cubism--France.
Rosenberg, Léonce, 1879-1947.
World War, 1914-1918--Art and the war.