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

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

Brown chalk on buff wove paper

Black chalk on off-white laid paper

Graphite on darkened off-white wove paper

Crayon on paper

Charcoal on off-white laid paper

Black ink on machine made rag wove paper

Drawing scratched on slide film, hand colored

Graphite on paper

Watercolor on white paper

Graphite on paper

Black crayon on off-white laid paper