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

Black marker on paper

Colored crayon on paper

Paper, adhesive, and black and red marker on paper

Black marker on paper

Graphite and colored crayon on paper

Black and green crayon on paper

Blue marker on paper

Black marker on paper

Graphite on cream wove paper

Black marker on paper

Colored marker on paper

Black marker on paper