Research Project on Economical Apartment Design, 1930: Plans of floors with 11, 12, and 22 apartments

Ink, wash, gouache, and collage elements on paper

Graphite and colored pencils on paper

Graphite on paper

Graphite and colored pencils on paper

Black and red marker on paper

Black and red marker on paper

Blue and green crayon on paper

Colored marker on paper

Graphite on paper

Graphite on paper

Graphite on paper

Colored crayon on paper