Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Window frame schedule, 1:100

Red and black chalk on gray laid paper

Ink on paper

Watercolor, gouache, and graphite on off-white wove paper

Black ink and watercolor on white laid paper

Black ink and graphite on off-white wove paper

Graphite on off-white wove paper

Black ink and graphite on tracing paper with acetate overlays

Black ink over graphite on off-white wove paper

Graphite on off-white wove paper

Colored ink on plastic

Ink and brown pencil on white wove paper

Graphite and white crayon on blue laid paper