Theo van Doesburg, Study for Composition VIII (The Cow) (recto); Untitled (verso), c. 1917, Gouache, oil, and charcoal on paper (recto and verso), The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35396

Chris Hendrik Beekman, Composition, 1916, Pastel and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38177

Piet Mondrian, Church Facade 6, 1915, dated 1912, Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34630

Bart van der Leck, Study, (1916–17), Gouache and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38256

Theo van Doesburg, Composition, 1917, dated 1915, Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37350

Theo van Doesburg, Study for Composition (The Cow), 1917, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33340

Bart van der Leck, [Untitled], 1917, Gouache and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34792

Piet Mondrian, Pier and Ocean 5 (Sea and Starry Sky), 1915, dated 1914, Charcoal and watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33419