Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Ground floor plan, 1:100

Watercolor on heavy off-white wove paper

Watercolor on white wove paper

Graphite on thin off-white wove paper

Watercolor on off-white wove paper

Black chalk and graphite on off-white laid paper

Crayon on paper

Black ink and graphite on off-white wove paper; verso: black ink

Graphite on off-white wove paper

Graphite on paper

Charcoal with scratchwork on heavy off-white wove paper

Graphite and gray wash on cream wove paper

Turpentine wash with oil over graphite on off-white wove paper