September 12, 1906 | purple colored pencil and graphite on paper
1883 | graphite on tracing paper
late-19th century - early 20th century | graphite on paper
1880 | graphite on paper
1880 | ink and wash on paper
August 1886 | graphite on paper
mid-19th century - early 20th century | ink wash over graphite on paper
1886 | wash and graphite on paper
late 19th century | graphite on paper
mid-19th century - early 20th century | graphite on paper
February 23, 1867 | graphite on paper
1882 | graphite on paper
1879 | printing ink on tracing paper
1882 | printing ink on paper
1882 | brown printing ink on paper