REMOVE

1. Graphic arts
2. Collage

WHAT

1. still image (6)
2. Magazine covers - United … (5)
3. journals (periodicals) (5)

WHERE

1. Pennsylvania - Philadelph … (6)

WHO

1. Giusti, George, 1908-1991 (5)
2. Leibowitz, Matthew, 1918- … (1)

WHEN

1. 1957-09 (1)
2. 1963-04 (1)
3. 1965 approximate (1)
4. 1966-01 (1)
5. 1966_11 (1)