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

Graphite on brown wove paper

Graphite on heavy cream wove paper

Watercolor and gouache on white wove notebook paper

Ink on paper

Charcoal on printed map on off-white wove paper

Watercolor over graphite on off-white wove paper

Graphite on paper

Graphite and blue crayon ; graphite and yellow crayon on paper

Crayon on paper

Graphite on off-white wove paper

Colored crayons on paper

Black crayon and ink on paper