Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Penthouse: plan, sections, 1:50

Turpentine wash with oil on off-white wove rag paper

Graphite on off-white wove paper; verso: charcoal transfer

Black and white chalk on blue-gray wove paper

Brown fabric covered album with 38 drawings

Watercolor on off-white wove paper

Graphite on off-white wove paper

Watercolor

Watercolor and white gouache on off-white laid paper

Watercolor over graphite on heavy off-white wove paper

Brown and gray wash, white gouache, black ink and black crayon on off-white wove paper, incised and scrubbed

Graphite on brown tracing paper

Graphite on off-white wove paper