LICHTENSTEIN, ROY (1923?1997). Pair of vintage posters. Including ?Stepping Out"?(1979) and?"I know how you must feel?Brad"?(1990). Offset lithographic posters after works by one of America's pop art leaders, Roy Lichtenstein. Stepping Out, published by Leo Castelli Gallery, New York in 1979, presents Lichtenstein's bold comic-strip-inspired imagery in vibrant color.?I know how you must feel?Brad, issued by Nouvelles Images, S.A. in 1990 is an exhibition poster referencing the Ludwig Museum collection in Aachen, Germany.