1886 | printing ink on paper
late 19th century | graphite on paper
1881 | printing ink on paper
July 12, 1873 | graphite and ink on paper
1882 | brown printing ink on paper
March 29, 1923 | graphite on paper
1882 | printing ink on paper
mid-19th century - early 20th century | ink on paper
mid-19th century - early 20th century | graphite on paper
1879 | graphite on woven commercial paper