late 19th century - early 20th century | gelatin silver process
1845 | ink wash and pen on paper
1830 | engraving on paper
mid-19th century | watercolor and graphite on paper
late 19th century - early 20th century | Modeling compound (likely air-dry Modello or similar), iron armature, paint.
1920 | gelatin silver process
1916 | oil on canvas
early 20th century | oil on board
1933 | oil on board
late 19th century - early 20th century | graphite on paper