Prefabricated Copper Houses, 1931-1932: Building type M1: plans and perspective sketches

Colored marker on paper

Graphite and blue crayon on paper

Crayon on paper

Black crayon on paper

Black crayon on paper

Black marker on paper

Colored marker, black pen, and blue pen on paper

Colored marker and black pen on paper

Watercolor on paper

Colored and metallic marker on paper

Colored marker on paper

Colored marker and blue pen on paper