Bahner Residence, Berlin, Klein-Machnow, 1933: Sketches of ground floor plan and interior perspective, 1:100

Watercolor on paper

Black ink on off-white wove paper, folded

Graphite on paper

Red marker and black pen on paper

Graphite and watercolor on paper

Ink and gouache on paper

Colored marker on paper

Black crayon on paper

Colored marker and watercolor on paper

Black crayon on envelope

Black and red marker on paper

Black marker on paper