Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Location of underwater pool lighting: diagram and detail (1/4" = 1'0")

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

Watercolor and white gouache over black and colored chalk on ivory wove paper

Black ink and ochre crayon on dark cream wove paper, darkened

Graphite on cream wove paper

Crayon on paper

Black ink on off-white wove paper

Black ink on off-white wove paper mounted to card

Black ink, graphite, colored chalk on off-white wove paper; verso: black ink

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Black ink, watercolor, and metallic paint over graphite on cream wove paper; album leaf: black ink and graphite

Graphite on cream wove paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper