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

Graphite on paper

Black ink on frosted mylar

Black ink on off-white wove paper

Off-white card

Graphite on paper

Graphite on beige lined notebook paper

Charcoal on off-white laid paper

Watercolor over graphite on off-white wove paper

Colored ink on plastic

Graphite on thin buff wove paper

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

Charcoal on blue laid paper