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

Green and black crayon on paper

Ink on paper

Black crayon on paper

Colored marker on paper

Black and blue crayon on paper

Black crayon on paper

Black crayon on paper

Black crayon on paper

Red and black ink on paper

Black crayon on paper

Graphite on paper

Graphite on paper