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Pen
1935–1940
Charcoal
1918–1924
Crayon, black
1919–1924
1920–1925
Crayon, multicoloured
Crayon, black?
1928–1930
Crayon, brown
1916–1922
1935–1937
Pencil
1932–1936
Watercolour, gouache, pencil
1909–1915
1922–1924
Gouache on paper
Ca 1915
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