Stanley William Hayter:Calculus (Black Moorhead 353), 1971 Etching in colors on Rives BFK paper, signed in pencil, titled, dated and numbered 37/100, with full margins. 23 1/4 x 19in (59.1 x 48.3cm) sheet 29 1/2 x 22in (74.9 x 55.9cm)
Stanley William Hayter:Calculus (Black Moorhead 353), 1971 Etching in colors on Rives BFK paper, signed in pencil, titled, dated and numbered 37/100, with full margins. 23 1/4 x 19in (59.1 x 48.3cm) sheet 29 1/2 x 22in (74.9 x 55.9cm)