(1932)
letterpress
(1934)
(1944)
(1997)
lithograph
(1940)
linocut
(1875)
pen and ink
(1984)
screenprint
(1893)
wood-engraving
(1929)
(1927-1935)
(1942)
(1960-70)
etching
(1939)
(1992)
photograph printed in colour
(1899)
engraving