Research Project on Economical Apartment Design, 1930: Ia, Ib: section and estimate

Graphite on paper ; graphite and aqua crayon on paper

Graphite on paper

Black marker on paper

Collage of cut printed paper, metal foil, cellophane, watercolor, and graphite on wove paper

Woodchips on white wove paper

Black crayon on paper

Colored marker on paper

Graphite on paper

Black ink and opaque watercolor on paper

Ink on vellum

Black marker and blue pen on paper

Graphite on paper