Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Balconies: perspective sketch

Graphite on paper

Charcoal on blue laid paper

Graphite on tan wove paper

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

Graphite on paper

Watercolor on off-white wove paper

Graphite on paper

Black ink on off-white cardboard

Beeswax, graphite, detritus and debris on wove paper

Watercolor over graphite and black crayon on off-white wove paper

Graphite on off-white wove paper

Black ink, charcoal, and watercolor pencil on cream wove paper