Prefabricated Copper Houses, 1931-1932: Building type K: perspective sketch

Graphite on paper and mounted

Graphite on cream wove paper

Graphite and traces of brown pencil on cream wove paper

Black ink, partly over graphite, on cream laid paper.

Black marker on paper

Black marker on paper

Graphite on paper

Graphite on paper

Graphite and colored on paper

Graphite on paper

Colored crayon on paper

Graphite on paper