Curtain Waterfall, which is in the permanent collection of the National Gallery of Art, Washington, D.C., epitomizes Steir’s 40-year exploration of abstract painting. Pouring thin layers of pigment from the top of her canvases and allowing them drip down the surface, Steir deploys a “uniquely harmonious means to maximize and master the liquidity of paint, both as a material and a signifier,” according to Art in America magazine.