Sonnenaufgang (1936)
Colour copperplate engraving , signed and entitled , 13 x 19.5 cm (26.8 x 37.8 cm). Private collection, Switzerland.
Der Kolonist (1920)
Lithograph, signed in pencil and monogrammend in the plate , 23 x 16.8 cm. Private collection, Switzerland.
Untitled (1987)
Fat graphite on paper, signed and dated, 36 x 51 cm. Private collection, Switzerland.
Erwachender (1923)
Copperplate engraving, signed (right) and entitled (left), 17.0 x 11.5 cm (37.9 x 26.8 cm). Private collection, Switzerland.
Untitled (1911)
Etching printed on paper, signed and dated ion the plate, described “1. Dr.” with pencil, 16 x 9.5 cm (28 x 17 cm). Private collection, Switzerland.
Untitled (1955-57)
Watercolour and pencil on paper, signed, 17.5 x 24.5 cm. Private collection, Switzerland.
Untitled (out of the series “Schrecken des Krieges”) (1917-1918)
Charcoal on paper, signed, 44.2 x 33.6 cm. Private collection, Switzerland.
Untitled (1962)
Pencils and pastels on paper, signed and dated, 35.1 x 24.4 cm. Private collection, Switzerland.
Untitled (1917-1920)
Watercolour on paper, signed, 48.6. x 38.9 cm. Private collection, Switzerland.
Auf dem Friedhof (1917)
Drypoint, signed and monogrammed and dated inthe plate. Private collection, Switzerland.
