(by 1949)
linocut
(1965)
etching and aquatint printed in blue
etching and aquatint
(1999)
(1952)
aquatint
(1932)
(1953)
wood-engraving
(c.1960)
monotype
(1956)
softground etching
(c.1923)
woodengraving
(1963)
lithograph
(1962)
etching
(c.1950)
screenprint
(1999, November)
aquatint and etching
(1986)