This document provides an overview of American abstract expressionist artists and their works from the 1940s-1960s. It mentions Clement Greenberg and his views on avant-garde art. Key figures discussed include Arshile Gorky, Willem de Kooning, Jackson Pollock, Lee Krasner, Robert Motherwell, Franz Kline, Philip Guston, Elaine de Kooning, Mark Rothko, Barnett Newman, Ad Reinhardt, David Smith, Mark di Suvero, John Chamberlain, and Joseph Cornell. Their abstract, expressionist paintings and sculptures from this period pushed boundaries and represented new artistic techniques.