Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Sofa and cases, room #220, elevations, sections, plan (1 1/2" =1'-0" and full size)

Charcoal on off-white laid paper

Charcoal and graphite on white wove paper

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

Watercolor over graphite on off-white wove paper

Black ink on cream wove paper

Black ink and yellow chalk on off-white wove paper

Black ink on white tracing paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Charcoal on paper

Watercolor over graphite on off-white wove paper (recto and verso)

Black chalk and charcoal on off-white laid paper