Robert Elkon Gallery, New York Galleria Salvatore Ala, Milan Private Collection Christie's Amsterdam, 14 April 2015, lot 25 Acquired from the above by the present owner
New York, Robert Elkon Gallery, Agnes Martin: Drawings 1960 to 1967, 1974 Milan, Galleria Salvatore Ala, Agnes Martin, 1974
Tiffany Bell, ed., Agnes Martin: Catalogue Raisonné: Paintings, New York, 2017 - ongoing, no. 1960.085 WP, illustrated in color (online)