Prefabricated Copper Houses, 1931-1932: Building types S1: west elevation, 1:20

Black ink over traces of graphite on cream wove paper

Colored marker on paper

Black and orange marker on paper

Blue and green marker on translucent film and paper

Black and blue marker on paper

Graphite on paper

Black crayon on paper

Black marker on paper

Black ink and graphite on off-white wove paper

Graphite on paper

Colored crayons on paper

Graphite with brown and blue crayon on paper