lithograph
(1971)
etchings
(1986)
colour xerography
(1987)
(1960-80)
etching
(1956-57)
linocut
aquatint
(c.1930)
woodcut
(1977)
aquatint printed in black ink
hard ground
(c.1975)
(1991)
drypoint
(1988)
(1990)
(c.1984)
screenprint
(1983)
offset-lithograph
(1964)
(1995)