1868 | printing ink on paper
1880 | printing ink on paper
1886 | printing ink on paper
1882 | printing ink on paper
graphite on paper
1946 | colored pencil and graphite on paper
late 19th century | graphite on paper
1880 | graphite on paper
late-19th century - early 20th century | graphite on paper
June 1, 1893 | graphite on paper
1879 | graphite on woven commercial paper
May 12, 1907 | graphite on paper
late-19th century - early 20th century | printing ink on paper