Research Project on Economical Apartment Design, 1930: Building type IIIb: basement plan, 1:50

Watercolor on paper

Black crayon on paper

Charcoal, chalk, oil on gray paper

Black crayon on tan wove paper

Graphite, watercolor, and ink on paper

Black marker on paper

Black and red marker on paper

Ink on paper

Colored marker on paper

White gouache and graphite on white wove paper and glassine envelope

Graphite and crayon on paper

Black crayon and pencil on paper