Bahner Residence, Berlin, Klein-Machnow, 1933: Heating installation plans, 1:50

Black crayon on paper

Paper with color transfer

Solvent on printed paper

Graphite on paper

Colored marker on paper

Black crayon on paper

Black marker on paper

Graphite on paper

Colored marker and opaque watercolor on paper

Black, purple, and pink crayon on paper

Graphite and colored pencil on paper

Watercolor