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

Watercolor on paper

Blue pen on paper

Graphite on paper

Graphite on paper

Gray marker on paper

Black crayon on paper

Graphite on paper

Black marker on paper

Colored marker on paper

Green marker on yellow paper, carbon copy, black pen on paper, adhesive, colored marker, and black pen on paper

Black crayon on paper

Colored marker, paper, and adhesive on paper