Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketch of detail

Black ink, white gouache, and black crayon on off-white laid paper

Watercolor and graphite on off-white wove paper

Black ink, watercolor, and charcoal on cream wove paper

Watercolor and white gouache over graphite on blue wove paper

Graphite on paper

Sketchbook with cardboard covers and spiral wire binding

Dark red-brown conte crayon on white wove paper

Colored pencil on off-white wove paper

Black chalk over brown chalk on darkened off-white wove paper

Graphite on paper

Crayon on paper

Graphite on off-white wove paper