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

Black crayon on tan wove paper

Graphite on paper

Colored marker and tape on paper

Black marker on paper

Graphite and crayon on paper

Charcoal and colored pencil on cream laid paper

Graphite on paper

Black ink, black and colored crayons on cream laid paper

Black crayon on paper

Colored marker on paper

Graphite on paper

Black crayon on paper