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

Black and blue crayon ; black crayon on paper

Colored marker on paper

Graphite on paper

Colored marker and black pen on paper

Graphite on paper

Colored marker and blue pen on paper

Charcoal on tan tracing paper

Graphite on paper

Graphite on paper

Colored marker on paper

Colored crayons on paper

Ink on paper