1992 | ballpoint pen on paper
June 1873 | graphite on paper
July 11, 1873 | graphite on paper
late 19th century | graphite on paper
July 13, 1910 | graphite on paper
1888 | graphite on paper
1880 | graphite on paper
late-19th century - early 20th century | graphite on paper
mid-19th century - early 20th century | graphite on tracing paper
mid-19th century - early 20th century | graphite on paper
May 1883 | graphite on paper
March 29, 1923 | graphite on paper
1867 | graphite on paper
1893 | graphite on paper, red chalk on verso
September 6, 1906 | graphite and purple colored pencil on paper
1886 - 1888 | graphite on paper
June 23, 1910 | graphite on paper