Forms derived from a Cube. 1991. The portfolio comprising 12 Silkscreen in colors. Online catalogue raisonné Sol LeWitt Prints 1991.15. Each signed and numbered. From an edition of 35 copies. On firm wove paper by Somerset (without watermark). Each 76.2 x 76.2 cm (30 x 30 in). Sheet: each 81,2 x 81,2 cm (31,9 x 31,9 in). Printed by Keizo Tasaka, Watanabe Studios, New York. Published by Achenbach Graphics, Düsseldorf 1991.