Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Plan and elevation

Black ink and black crayon over graphite on off-white laid paper

Leather bound sketchbook

Charcoal, white pencil, red and blue watercolor (or ink) on off-white wove paper

Watercolor on paper

Black ink and white gouache on darkened off-white wove paper

Watercolor and graphite on cream wove paper

Graphite on heavy weight, white card stock (Strathmore Bristol board)

Graphite on off-white wove paper

Watercolor and graphite on off-white wove paper

Black ink on lithographed lines on off-white wove paper

Charcoal on off-white laid paper

Black ink and wash on white wove paper