(1923-1933)
linocut
(1981)
etching
(1784)
etching and engraving
(1997)
etching and aquatint
(1959)
screenprint
(1949)
(1846-47)
lithograph
(1964)
(1962)
(1936)
(1987)
offset-lithograph
(1993)
(1996)
(1950 (about))
(1940)
colour monotype
(1983)
(1992)
(1990)