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

Black and colored crayons on paper

Black and red marker and black pen on paper

Graphite and blue crayon on paper

Ink on paper

Colored marker on paper

Graphite on paper

Ink with yellow, blue, and purple crayon on paper

Purple crayon on paper

Black marker on paper

Graphite on paper

Black and red marker on paper

Graphite on paper