Prefabricated Copper Houses, 1931-1932: Building type S: rafter layout, 1:20

Blue crayon on paper

Black crayon on paper

Black marker on paper

Graphite on paper

Opaque watercolor on tan wove paper

Black crayon on paper

Colored and metallic marker on paper

Blue marker and black pen on paper

Graphite on paper

Black crayon on paper

Paper

Colored crayons on paper