Competition Entry for "Growing House" for "Sun, Air, and House for All" Exhibition, Berlin, 1932: Isometric sketches

Ink on paper

Colored marker on paper

Graphite and blue crayon ; blue crayon on paper

Purple-gray crayon on paper

Black crayon on paper

Graphite on paper

Graphite on paper

Colored marker on paper

Gouache on white wove paper

Black crayon on paper

Graphite and colored pencils on paper

Colored marker and black pen on paper