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
1880 | printing ink on paper
mid-19th century - early 20th century | ink on paper
May 31, 1910 | graphite on paper
late-19th century - early 20th century | graphite on paper
1881 | printing ink on paper
1873 | graphite and ink on paper
1880 | graphite on paper
1888 | graphite on paper
mid-19th century - early 20th century | graphite on tracing paper
late 19th century | graphite on paper
1883 | printing ink on paper