Ilya Bolotowsky, Study for 1939 New York World's Fair Mural, Hall of Medical Science, 1938–39, Oil on canvas, Art Institute of Chicago, Chicago. https://dartabase.art/cite/aic/93779

Ilya Bolotowsky, Blue and Black Vertical, 1971, Felt-tip pen and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35473