Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Revised duct location: plan for 208 (1/4" = 1'-0")

Watercolor and white gouache on blue-flecked buff wove paper

Colored pencil and chalk on pinkish-tan wove paper

Watercolor over graphite on off-white wove paper

Black ink over graphite on cream paper mounted to board

Graphite on cream wove paper

Charcoal and black ink on cream laid paper

Graphite on off-white wove paper

Watercolor and white gouache on off-white wove paper

Sketchbook with brown cloth-covered cardboard covers

Graphite on off-white wove paper

Black ink and charcoal on cream laid paper

Black ink on off-white wove paper