(1924)
softground etching
(1931)
letterpress
(1991)
screenprint and photo-screenprint
(1988)
etching
(1957)
woodcut
(1985)
screenprint
(1954-66)
(1933)
linocut
(1932)
lithograph
(1999, 6 October)
(1999)
(1993)
(1966)
colour etching and aquatint