(1978)
photocopy
(1981)
screenprint
(1988)
linocut
(1852)
lithograph
(1974)
etching
(1975)
etching and aquatint
(1989)
printed in colour
(1950)
aquatint
(c.1961)
photo-lithograph
(1931)
(c. 1920)
woodcut
(1952)
(1993, March)
(1983, before 14 December)
(1986)