Charles Sheeler, Church Street El, 1920, oil on canvas, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/149112

Preston Dickinson, Still Life, c. 1924, oil on canvas, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/93239

Georgia O'Keeffe, Morning Glory with Black, 1926, oil on canvas, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/135420