1881 | printing ink on paper (14.81a-f, i-k), brown printing ink on paper (14.81g-h)
1879 | printing ink on paper
mid-19th century - early 20th century | graphite on paper
1910 | graphite on paper
1881 | printing ink on paper
1879 | brown printing ink on paper
1879 | graphite on woven commercial paper
1939 | ink on paper
late-19th century - early 20th century | graphite on paper
1888 | ink on notebook paper
1875 | printing ink on paper
1881 | graphite on paper
1880 | printing ink on paper
1873 | printing ink on paper