1. Georgia O’Keeffe (American, 1887-1986), Slightly Open Clam Shell, 1926. Pastel on white ground on paperboard, 18 ½ x 13 in. Wadsworth Atheneum Museum of Art, Hartford, CT

     
  2. Barbara Hepworth

     
  3. Gerhard Richter

     
  4. Vincent Hawkins

     
  5. Zaria Forman

     
  6.  
  7. Step two Georgia O’Grief helmet

     
  8. Brice Marden

     
  9. Marion Kavanaugh Wachtel (1875-1954):  The Sentinel (not dated).

    (Source: peira, via quillery)

     
  10.