(1960-80)
etching
(1956-57)
linocut
(1991)
(1979)
lithograph
screenprint
(1964)
(c. 1985)
(1988)
(1970)
(1961)
(1982-90)
(1987)
hardground etching
(1976)
(1981)
mezzotint
(1974)
aquatint printed in black ink