Research Project on Economical Apartment Design, 1930: Building type IIb: ground floor plan, 1:50

Black crayon on paper

Graphite on off-white wove paper

Watercolor on paper

Black and red marker on paper

Colored marker on paper

Graphite on paper

Graphite on envelope

Graphite on paper

Brown crayon on paper

Black crayon on paper

Black marker on paper

Graphite and blue crayon on paper