Research Project on Economical Apartment Design, 1930: IIb: plans, elevations, and section

Gouache, watercolor, and graphite on tan cardboard

Graphite on paper

Light green crayon on paper

Graphite on paper

Colored marker and black pen on paper

Black and red marker on paper

Black and purple marker on paper

Black and blue marker on paper

Black crayon on paper

Black crayon on paper

Black ink, gray wash, opaque watercolor over graphite on cream wove paper

Black crayon on paper