1850 | engraving on paper
300 BCE - 300 CE | clay, slip, paint
1300 - 1521 CE | clay
100 BCE - 700 CE | clay, mold-made
1880 | printing ink on paper
1903 | gelatin silver process
modeled 1914; lost-wax cast 1927 | lost-wax cast in bronze
late 19th century - early 20th century | graphite on paper
1947 | mahogany wood
1946 | cherry wood
Unknown | stone
Unknown | jade
Unknown | clay
late 19th century - early 20th century | gelatin silver process