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

Watercolor and black ink on off-white laid paper

Graphite on paper

Black crayon on cream wove paper

Colored crayons on paper

Graphite on paper

Graphite on paper

Colored marker on paper

Colored marker on paper

Colored marker on paper

Black crayon on paper

Graphite and colored crayons on paper

Black and aqua marker on paper