(1999)
etching and aquatint
(1963)
lithograph
(May 1961)
etching and sugar-aquatint
etching
(1936 (exhibited))
(1966 (documentation))
(1967)
colour etching
(1992)
aquatint
collograph
(1988)
aquatints
(c.1985)
drypoint
(1962-63)