Bibow, page 19 in the sketchbook "Travel Notes, Sept. 1921 Heiligenhafen, Stralsund, etc."

Dark purple crayon on paper

Graphite on paper

Graphite on paper

Black crayon on paper

Graphite on paper

Graphite on paper

Black marker on paper

Black marker on paper

Graphite on paper

Charcoal on paper

Black and purple crayon on paper

Graphite and red pencil on paper