(NOT SURE OF DATE) Untitled, 1961, Folded leporello book, watercolor on paper, Closed 17.8 x 19.7 x 1.7 cm, 31 pages, Max extension 552.7 cm Image Untitled, 1961, Folded leporello book, watercolor on paper, Closed 17.8 x 19.7 x 1.7 cm, 31 pages, Max. extension: 552.7 cm