Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketch of plan with circulation

Graphite on cream laid paper

Watercolor and black ink on off-white laid paper, mounted to off-white cardboard

Graphite on off-white wove paper

Graphite and ink on paper

Graphite on off-white wove paper

Graphite with extensive erasure, rubbing and scratchwork on off-white wove paper

Watercolor on ruled off-white wove paper

Graphite and red and white chalk on tan wove paper

Watercolor on cream wove paper

Charcoal on off-white laid paper

Charcoal on yellowed cream wove paper

Charcoal on off-white laid paper