Jackson Pollock. (American, 1912-1956). One: Number 31, 1950. 1950. Oil and enamel paint on canvas. 8' 10" x 17' 5 5/8" (269.5 x 530.8 cm). Sidney and Harriet Janis Collection Fund (by exchange). © 2011 Pollock-Krasner Foundation / Artists Rights Society (ARS), New York.

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