Bahner Residence, Berlin, Klein-Machnow, 1933: Exterior stairway and glass wall: plan, elevation, sections, and details, 1:1, 1:10, 1:20

Graphite with blue and yellow crayon on paper

Paper

Black crayon on paper

Black marker and black pen on paper

Black crayon on paper

Graphite on paper

Black marker on paper

Black ink on paper

Colored marker and black pen on paper

Colored marker on paper

Colored crayons on paper

Black crayon on paper