late 19th century - mid-20th century | gelatin silver process
1903 | gelatin silver process
1892 | gelatin silver process
1901 | gelatin silver process
1891 | gelatin silver process
1899 | gelatin silver process
September 1893 | gelatin silver process
1890 | gelatin silver process
1896 | gelatin silver process
mid-19th century - early 20th century | graphite on paper
1915 | gelatin silver process
1882 | printing ink on paper