The Collection of Clement Greenberg, NY - Clement Greenberg was arguably the most influencial art critic of the 20th century, and champion of abstract expressionist and modern art. His personal collection is a reflection of his involvement with artists including, and among the likes of, Helen Frakenthaler and Jackson Pollock. For more information, please visit https://en.wikipedia.org/wiki/Clement_Greenberg#Clement_Greenberg_Collection