White Line Square IX from the series White Line Squares

Image size:  15 3/4 x 15 3/4 inches (40 x 40 cm)
Paper size:  21 x 21 inches (53.3 x 53.3 cm)
Edition of 125
Signed and dated ‘A ’66’ lower right, titled and numbered lower left in pencil
(Inventory #24726)