Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketch of elevation with penthouse

Watercolor over graphite on off-white wove paper

Red, black, brown and white conté crayon on ivory tracing paper

Watercolor on off-white wove paper

Watercolor and black ink over graphite on off-white wove paper

Graphite on off-white antique laid paper

Mixed media on paper

Black ink and gouache on cream wove paper

Charcoal and white chalk on gray paper

Watercolor over graphite on off-white wove paper, mounted overall to cardboard

Graphite and ink on paper

Black ink on blue-ruled white graph paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper