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

Graphite on off-white paper

Graphite on paper

Graphite on paper

Graphite on paper

Graphite and colored pencils on paper

Watercolor on paper

Black marker on paper

Black marker on paper

Colored marker on paper

Graphite on paper

Black and red marker on paper

Black crayon on paper