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

Graphite and transparent watercolor on cream wove paper

Gray crayon on cream wove paper

Black crayon on paper

Colored marker, paper, and adhesive on paper

Ink on paper

Black ink and marker on paper

Ink on paper

Black marker, paper, and adhesive on paper

Black, blue, and yellow crayon on paper and mounted

Graphite on paper

Black marker on paper

Paper