(1950s)
etching
(1912)
etching and foul biting
(1958)
photocopy
(c.1947)
screenprint
(1965)
monotype
(1970s)
woodcut
(1968)
linocut
(May 1961)
(1966)
etching and aquatint
((1955))
(1954)
(1952)
lithograph
(1951)
(1953)
(1967)
(1957)