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

Graphite on paper

Ink on paper

Colored crayons on paper

Black crayon on paper

Colored marker on paper

Black crayon on paper

Colored crayons on paper and mounted

Colored crayons on paper

Graphite on paper

Crayon on paper

Ink and applied type on paper

Watercolor and gouache over traces of graphite on cream card