Louise Nevelson, 1899-1988, (i) the great wall (ii) dusk in august, (i) signed, titled, dated 70 and numbered 58/150, (ii) signed, titled and inscribed Artist's Proof, (i) embossed lead collage (ii) lithograph with embossing, (i) (visible sheet) 74x62cm.; 29x24.25in. (ii) 72x58.5cm.; 28.5x23in. (2)