OK Harris Works of Art, New York Private Collection, New York (acquired from the above circa 1969) Sotheby's, New York, 25 September 2013, lot 324 Private Collection, USA Sotheby's, New York, 2 March 2017, lot 82 Acquired at the above sale by the present owner
signed, titled and dated 'Frank Stella Protractor Variation IV, 1968 R Pettibone 1969' on the stretcher acrylic and graphite on shaped canvas, in artist's frame 5.4 x 10.4 cm (2 1/8 x 4 1/8 in.) Executed in 1969.