Fernand Léger, Kneeling Nude, c. 1907–08, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37365

Constantin Brancusi, The First Step, c. 1912, Oil, over graphite, on brown woodpulp board, prepared with shellac, Art Institute of Chicago, Chicago. https://dartabase.art/cite/aic/82499