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

Graphite on cream wove paper

Crayon and graphite on brown wove paper

Watercolor on paper

Colored crayons on paper

Gray wash on faded blue-gray wove paper, mounted to cardboard

Graphite on off-white wove paper

Watercolor, wax, crayon, and black ink on beige laid paper

Black ink, graphite, and yellow chalk on off-white wove paper; verso: black ink

Black ink on cream wove paper

Collage of newsprint with opaque watercolor; graphite and scored on off white wove paper

Watercolor on cream wove paper

Graphite on cream wove paper