 All of Guggenheim's temporary exhibitions took place here, including the New York debuts of William Baziotes, Robert De Niro (Sr.), David Hare, Robert Motherwell, Jackson Pollock, and Charles Seliger and important early exhibitions of Richard Pousette-Dart, Mark Rothko, and Clyfford Still.This space also contained Kiesler's mobile Painting Libraries, wheeled easel units with projecting glass rods which allowed viewer's to study works while seated on Correalist Instruments.Abstract Art was not new to the New York artists.