Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketches

Graphite on off-white wove paper

Graphite on tan wove paper; graphite on tan wove paper

Graphite and white crayon on blue-buff wove paper

Charcoal and black ink on cream laid paper

Graphite on off-white wove paper

Black ink on cream wove paper; verso: black ink, blue watercolor, and green and orange crayon

Black chalk on blue laid paper

Blue ball point pen and graphite on cream colored paper

Red-orange and yellow-green crayon, and graphite on off-white wove paper

Tempera on purple construction paper

Watercolor over graphite on off-white illustration board

Graphite on off-white wove paper