Left: Ad Reinhardt, Abstract Painting, 1963. ©️ 2025 Anna Reinhardt.

Center: Dorothea Rockburne, Egyptian Painting: Scribe, 1979. ©️ 2025 Dorothea Rockburne.

Right: Agnes Martin, Untitled #11, 1985. ©️ Agnes Martin Foundation, New York.

Courtesy of the Artists Rights Society (ARS), New York. / Photo: Olympia Shannon.