Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Penthouse floor plan, 1:100

Ink on paper

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

Gouache on felt

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Graphite on paper

Watercolor, black ink, and wax on white wove paper

Graphite on paper

Graphite on off-white wove paper

Charcoal on cream laid paper

Watercolor over graphite on off-white wove paper, mounted to off-white card

Watercolor [and gray wash?] and graphite on off-white wove paper

Black ink and watercolor on buff wove paper