Bahner Residence, Berlin, Klein-Machnow, 1933: Stairway with railing: section and details, 1:20

Ink on paper

Graphite on paper

Colored marker and blue pen on paper

Colored marker on paper

Charcoal on paper, mounted

Colored crayons on paper

Blue marker on translucent film and paper

Graphite with red and yellow crayon on paper

Graphite on paper

Graphite and brown watercolor on paper

Black marker on paper

Graphite and colored crayons on paper