Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketches of details

Beeswax, graphite, detritus and debris on wove paper

Black & brown chalk, brown wash, black ink & scratchwork on off-white wove ppr

Black chalk on off-white wove paper

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

Incised line and Aquarelle on white wove paper

Sketchbook with cardboard covers and spiral wire binding

Graphite on thin off-white wove paper

Watercolor, graphite wash and black crayon on off-white wove paper

Spiral bound sketchbook

Black ink on cream wove paper

Black tempera on cream machine-made wove paper, mounted to off-white laid paper

Graphite on off-white wove paper