1881 | printing ink on paper (14.81a-f, i-k), brown printing ink on paper (14.81g-h)
mid-19th century - early 20th century | graphite on paper
1880 | printing ink on paper
1881 | printing ink on paper
1880 | graphite on paper
late-19th century - early 20th century | graphite on paper
1883 | printing ink on paper
mid-19th century - early 20th century | graphite on tracing paper
1864 | lithographic crayon and graphite on paper
1939 | ink on paper