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

Watercolor and black chalk on off-white wove paper

Chalk on paper

Charcoal on cream laid paper

Black ink on off-white wove paper

Watercolor and graphite on white wove paper

Black crayon on tan wove paper

Charcoal and graphite on off-white laid paper

Graphite and colored pencil on paper

Black crayon on paper

Charcoal and white chalk on gray paper

Spiral bound sketchbook

Charcoal on cream wove paper; verso: charcoal and graphite