1879 | graphite on paper
July 23, 1880 | graphite on paper
July 6, 1880 | graphite on paper
1880 | graphite on paper
September 2, 1880 | graphite on paper
September 12, 1906 | purple colored pencil and graphite on paper
mid-19th century - early 20th century | black ink on paper
late 19th century | graphite on tracing paper
late-19th century - early 20th century | graphite on paper
mid-19th century - early 20th century | graphite on paper
1873 | graphite on paper
late 19th century | graphite with white chalk on paper
1878 | graphite on paper
March 1, 1877 | graphite on paper