In one of Mr. Baltrop's photographs you get
a glimpse of a piece of art composed of those elements: a 1975 installation called «Day's End» by the artist Gordon Matta - Clark (1943 - 1978), who cut a giant half - moon - shaped slice out of a pier wall and brought daylight streaming in.
Showcasing the
pieces of Victor Vasarely, Josef Albers, Max Bill, and many others, this extensive catalogue gives us a
glimpse into the private collection
of Peter and Rosemarie Ruppert, arguably the most comprehenisve in the world, thoroughly covering the last 70 years
of concrete
art.