Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Interior elevation

Gouache on very heavy wove paper

Graphite on paper

Graphite on off-white wove paper

Watercolor and black ink on white laid paper

Black ink and graphite; verso: graphite

Graphite on off-white wove paper

Watercolor on cream wove paper

Graphite on off-white wove paper

Blue marker and graphite on white wove translucent paper

Watercolor over graphite on off-white wove paper

Watercolor over graphite, colored chalk and brown ink on off-white wove paper

Pastel and graphite on folded and layered brown wove paper