Agnes Martin, Untitled, c. 1960s. Ink and graphite on paper, 8 1/16 x 8 15/16 inches (20.5 x 22.7 cm). Jack Shear Collection © Agnes Martin Foundation, New York / Artists Rights Society (ARS), New York.
Agnes Martin, Untitled, c. 1960s. Ink and graphite on paper, 8 1/16 x 8 15/16 inches (20.5 x 22.7 cm). Jack Shear Collection © Agnes Martin Foundation, New York / Artists Rights Society (ARS), New York.