Competition Entry for "Growing House" for "Sun, Air, and House for All" Exhibition, Berlin, 1932: Sketches of plan and isometrics

Black and purple crayon on paper

Colored and metallic marker, and opaque watercolor on paper

Black marker on paper

Graphite on paper

Graphite on paper

Graphite on paper

Colored marker on paper

Black ink and graphite on paper

Black crayon on paper

Black and red marker and black pen on paper

Graphite on paper

Graphite on paper