Prefabricated Copper Houses, 1931-1932: Building type K1: basement and ground floor plans

Black marker on paper

Graphite on off-white paper

Graphite on paper

Blue pen on adhered sheet and adhesive on paper

Paper

Black crayon with touch of purple-gray on paper

Black crayon on paper

Blue crayon on paper

Graphite and colored crayon on paper

Black crayon on paper

Graphite on paper

Watercolor on paper