Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Curtained enclosure - roof deck 308: plan, elevation, and details (1/2" = 1'-0" and full size)

Sketchbook with beige cloth-covered cardboard covers

Pastel on cardboard

Black ink on pale buff wove paper

Black, purple and brown crayon on paper

Pastel on blue wove paper

Watercolor and white gouache on off-white wove paper

Graphite on off-white tracing paper

Black ink on white wove paper

Graphite on paper

Charcoal on blue laid paper

Incised line and Aquarelle on white wove paper

Graphite on brown paper