1860 | silver and palladium
1880 | printing ink on paper
1888 | printing ink on paper
1881 | printing ink on paper
circa 1860 | printing ink on paper
1882 | printing ink on paper
1886 | printing ink on paper
1886 | brown printing ink on paper
late 19th century | graphite and ink on paper
mid-19th century - early 20th century | blue ink on paper
late 19th century | graphite on paper