Prefabricated Copper Houses, 1931-1932: Building types S, S1: window details, 1:10

Charcoal on paper

Graphite on paper

Black, purple, and green marker on paper

Graphite and red crayon on paper

Graphite on paper

Black pen on paper

Graphite on paper

Colored marker on paper

Graphite on paper

Colored crayons on paper

Graphite on paper, mounted

Black crayon on paper