Research Project on Economical Apartment Design, 1930: Building type IIb: first, second and third floor plans, 1:50

Graphite on paper

Graphite and watercolor on paper

Graphite on off-white wove paper

Black chalk on off-white wove paper

Black marker on paper

Watercolor on paper

Colored marker and blue pen on paper

Graphite and purple crayon on paper

Graphite on paper

Graphite on paper

Colored marker on paper

Black ink, opaque and transparent watercolor, metallic paint, and graphite on cream wove paper mounted to cream card