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

Colored marker and black pen on legal paper adhered to paper

Colored crayon on paper

Graphite on paper

Mixed media

Black crayon on paper

Graphite on paper

Colored marker and black pen on paper

Blue crayon on off-white wove paper

Colored marker on paper

Colored marker on paper

Graphite and colored crayons on paper

Graphite on paper