Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Plan and elevation

Graphite on off-white wove paper

Black ballpoint ink on brown cardboard

Graphite on paper

Brown chalk on off-white wove paper

Black chalk, charcoal, and graphite on off-white laid paper

Watercolor and graphite on white wove paper

Watercolor and white gouache on off-white wove paper

Ink on cardboard

Graphite on paper

Black colored pencil? conte? on cream wove paper

Watercolor and white gouache over graphite on off-white wove paper

Black ink on cream wove paper