(originally Yitzroch Loiza Grossberg) (born 1923), U.S. painter, sculptor, graphic artist, and designer, born in New York City; professional jazz saxophonist in early 1940s; studied painting at Hans Hoffmann School 1947–48 and at New York Univ. 1948–51; work of 1950s continued vigorous painterly style of abstract expressionism, but subject matter was that of a Pop artist; frequently used complex, fragmentary, and multiple views combined with sense of color and draftsmanship; commercial images were an important part of his work beginning in 1961, followed by mixed-media collage, construction, and sculpture; best known for his painting ‘Washington Crossing the Delaware' (1953).