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

Watercolor on paper

Graphite and watercolor on paper

Graphite on paper

Colored marker on paper

Graphite and blue crayon on paper

Black and red marker and black pen on paper

Alkyd and modified oil paint on machine-made laid paper

Graphite on paper

Colored marker and graphite on paper

Black crayon on paper

Colored crayons on paper

Black crayon on envelope