Prefabricated Copper Houses, 1931-1932: Building types S and S1: section, 1:20

Graphite and crayon on paper

Black and red marker on paper

Graphite on paper

Graphite on paper

Graphite on paper

Graphite with green and purple crayon on paper

Red and black marker on paper

Black crayon on paper, mounted to paper

Colored marker and green pen on paper

Black crayon on paper

Watercolor and gouache over graphite on off-white wove paper

Ink, over graphite, wash, and collage elements on paper