Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Plan and details, type II, III, 1:50, 1:10

Watercolor and graphite on white wove paper

Watercolor over graphite on cream wove paper

Graphite on paper

Off-white card

Graphite on off-white wove paper

Black ink on cream wove paper

Ink and watercolor on off-white modern laid paper

Red tempera on acetate

Black and red conté crayon on ivory tracing paper

Graphite on off-white wove paper

Pastel on white paper

Charcoal on gray laid paper