Research Project on Economical Apartment Design, 1930: Building type IIIb: first-third floor plans, 1:50

Graphite on paper

Black crayon on paper

Black ink on white laid paper

Colored marker on paper

Graphite on paper

Black marker, opaque watercolor, and yellow sticky note on paper

Black crayon and blue accent on paper

Charcoal on paper

Black crayon on paper, mounted to paper

Colored crayons on paper and mounted

Colored marker on paper

Graphite on paper