Furnishing for Kass Country Residence, Berlin-Zehlendorf, 1932: Sofa: perspective sketch

Black crayon on paper

Black crayon on paper

Black and red marker on paper

Graphite and red-orange crayon on paper

Black and red marker and black pen on paper

Black and red marker on paper

Graphite on paper

Colored marker on paper

Graphite on paper

Watercolor and graphite on paper

Colored marker on paper

Black crayon on paper