You might like Left Right Colour Structure 2 (trial proof) David Leverett 1971 Structure Richard Hamilton 1950 Light and Nature Structure Jack Smith 1969–70 Structure Brian Rice 1965 Structure 14c Stephen Gilbert 1961 Landscape Structure William Gear 1948 Light Structure John Hubbard 1966 Op Structure Michael Dillon 1967 Curvilinear Structure (Abakum) Jeffrey Steele 1972 Infinite Structure Saloua Raouda Choucair 1963–5 Ambiguous Structure No.92 Jean-Pierre Yvaral 1969