Agnes Martin, born in Macklin Canada in 1932, was one of the most important American Abstract Expressionist painters, although she was later more closely associated with the Minimal Art movement. Her pencil-drawn grids, created in New York, ensure her fame. At the height of her career in 1967, she stopped painting due to the growing burden of mental illness and moved to Taos, New Mexico. In 1974 Martin returns to painting but with a change of style. The new paintings are characterized by almost transparent, pastel-colored, horizontal or vertical lines. Agnes Martin took part in Documenta 5 and 6 in Kassel, and in 1992 the Stedelijk Museum in Amsterdam presented a big retrospective of her work.