White Line Square XV from the series White Line Squares

Edition of 125
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)
Frame size: 22 7/8 x 22 7/8 inches (58.1 x 58.1 cm)
Signed and dated ‘A ’66’ lower right, titled and numbered lower left in pencil
(Inventory #24732)