Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Perspective sketch

Watercolor on three sheets of overlapping white wove paper

Charcoal on blue laid paper

Graphite on paper

Graphite on off-white wove paper

Graphite on cream paper, mounted to heavy cardboard (?)

Blue crayon on paper

Brown wash and white gouache over graphite on blue wove paper

Watercolor and graphite on off-white wove paper

Transparent and opaque watercolor on off-white wove paper

Black ink on off-white wove paper

Opaque watercolor on cellulose nitrate film affixed to cardboard

Graphite on paper