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charcoal
1889
a) Pen b) Pencil
1879–1880
Watercolour, pencil
1878–1880
Pencil
1875
Pen
1908–1909
1908
a) Pencil b) Pencil, watercolour c) Pencil d) Pen
1912–1914
Crayon, multicoloured
1909–1910
Crayon, red
1909–1913
Ca 1920
1909–1911
Charcoal (?)
1919–1924
1916–1918
1920–1925
1918–1919
a) Pen, crayon, blue b) Pen
1927–1929
Crayon, brown
1918–1926
1886–1887
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