Research Project on Economical Apartment Design, 1930: Building type IIb: first, second and third floor plans, 1:50

Black and blue crayon on paper

Black crayon on paper and mounted

Graphite and watercolor on paper

Charcoal and graphite on paper

Paper

Colored marker on paper and adhered sheet of papers

Graphite and blue crayon on paper

Black marker and opaque watercolor on paper

Black crayon on paper

Graphite on paper

Colored marker and black pen on paper

Colored marker and adhesive on paper