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

Graphite on paper

Black crayon on paper

Graphite on paper

Colored marker on paper

Ink with blue and olive crayon on paper with torn edges

Black crayon on paper

Watercolor, silver paint, graphite, and gouache on cream wove paper

Ink on paper

Colored marker on paper

Graphite on paper

Graphite, crayon, black and white gouache, and collage elements on paper

Blue marker on paper