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

Graphite and blue paint on paper

Black crayon on cream wove paper

Graphite and colored pencil on paper

Black pen on ruled paper, adhesive, and black marker on paper

Graphite with colored crayons on paper

Colored marker on paper

Black crayon on paper

Black, yellow and purple crayon ; black crayon on paper

Watercolor on white wove paper, folded

Graphite on paper

Black marker on paper

Graphite with green and purple crayon on paper