All works by Helen Frankenthaler. Left to right: Europa, 1957, Vessel, 1961, Eden, 1956 © 2021 Helen Frankenthaler Foundation, Inc. / Artists Rights Society (ARS), New York.

All works by Helen Frankenthaler. Left to right: Europa, 1957, M, 1977 © 2021 Helen Frankenthaler Foundation, Inc. / Artists Rights Society (ARS), New York.

All works by Helen Frankenthaler. Left to right: The Sightseers, 1951, Europa, 1957, Vessel, 1961 © 2021 Helen Frankenthaler Foundation, Inc. / Artists Rights Society (ARS), New York

Helen Frankenthaler, Vessel, 1961, oil on unsized, unprimed canvas, 100 x 94 inches, Collection of the Tate. Presented by the Helen Frankenthaler Foundation (Tate Americas Foundation), 2019 © 2019 Helen Frankenthaler Foundation, Inc. / Artists Rights Society (ARS), New York