Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Balconies: plan, section, and isometric, 1:10

Charcoal on cream laid paper

Graphite on off-white wove paper

Black ink and graphite on off-white wove paper

Graphite on paper

Graphite on Mylar

Black ink over graphite on cream wove paper

Colored chalk on off-white wove paper

Charcoal on paper

Graphite and colored pencil on artist's vellum (tracing paper)

Black ink on off-white wove paper

Watercolor, black ink, fiber-tip ink, synthetic paint, wax and pastel (?) on white paperboard

Pastel on off-white wove paper?