Prefabricated Copper Houses, 1931-1932: Greenhouse plan, elevation and section, 1:20

Graphite on paper

Graphite and colored pencils on paper

Colored crayon on paper

Ink on paper

Charcoal on paper

Black and colored crayons on paper

Black crayon on paper and mounted

Black and blue pen on paper, black and white photocopy, and adhesive on paper

Black marker on paper

Graphite and colored crayons on cream wove paper

Black marker on paper

Black crayon on paper