František Kupka, Girl with a Ball, c. 1908, Pastel on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37352

Stanislav Kolibal, [Untitled], (1975), Ballpoint pen and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34553

Omar Rayo, Free-Fall, 1966, Charcoal and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37080

Stanislav Kolibal, [Untitled], (1975), Ballpoint pen and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34568

Alphonse Mucha, Rocks on the Shore, n.d., Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36941

František Kupka, Bather, (1906), Pastel and charcoal on gray paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37271

Fernando Botero, Woman in a Bathtub, 1974, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34215

František Kupka, Study in Verticals (The Cathedral), (1912), Pastel on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34122

Alphonse Mucha, Head of a Child, (n.d.), Pencil on board, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36948

Fernando Botero, Painter of Still Lifes, 1975, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37120