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

Black crayon on paper

Black and red marker and black pen on paper

Charcoal on paper

Black crayon on paper

Red and blue marker on paper

Colored crayons ; black crayon on paper

Graphite on paper

Graphite on paper

Black and colored crayons on paper

Black marker on paper

Black crayon on paper

Graphite on paper