WHITE LINE SQUARE IV (RED AND UMBER) Lithograph printed in colors, 1966, signed in pencil, dated, titled and numbered 16/125, on Arches paper, published by Gemini G.E.L., with full margins, in good condition apart from some wear to edges of margins and very slight toning to verso. Sheet: 21 x 21 in (53.3 x 53.3 cm).