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

Purple crayon on paper

Blue marker and black pen on paper

Black crayon on paper

Black crayon on paper

Black crayon on paper

Black ink on cream wove paper

Colored marker and black pen on paper

Black marker, blue ink, paper, and adhesive on paper

Graphite on paper

Graphite on cream wove paper

Gouache and graphite traces on off-white wove paper

Black and red marker and black pen on paper