Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Door schedule, 1:50

Watercolor and graphite on green wove paper

Black ink on off-white wove paper

Graphite on off-white wove paper

Crayon on paper

Black ink on white wove paper

Graphite on thin off-white wove paper

Charcoal on blue-green wove paper

Graphite on thin off-white wove paper

Watercolor over graphite on cream wove paper

Watercolor on off-white wove paper

Black ink on heavy brown wove paper

Graphite and watercolor on off-white wove paper