Prefabricated Copper Houses, 1931-1932: Building type K: plans and perspective sketches

Black crayon on paper

Black marker on paper

Black ink and opaque watercolor on paper

Colored marker and blue pen on paper

Colored marker and green pen on paper

Graphite on paper

Graphite on paper

Black and colored crayon on cream wove paper

Graphite on paper

Graphite on paper adhered to paper

Black crayon on paper

Black marker on paper