Research Project on Economical Apartment Design, 1930: Plans of floors with 3 or 4 apartments

Black crayon on paper

Graphite and aqua crayon on paper

Black crayon on paper

Charcoal on paper

Graphite and colored pencil on paper

Graphite on paper

Blue marker and black pen on paper

Black marker on paper

Mixed media

Ink, colored wash, and applied type on paper

Colored crayon on paper

Black marker on paper