Eduardo Chillida /Works and biography    Untitled, 1974 Collage on paper, 55.2 x 44.8 cm Solomon R. Guggenheim Foundation, Hannelore B. and Rudolph B. Schulhof Collection, bequest of Hannelore B. Schulhof, 2012 2012.37 © Eduardo Chillida, by SIAE 2012 credits: Hangar Design Group