Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Location of lights in swimming pool

Black ink on off-white (handmade?) wove paper

Black ink and graphite on white paper

Black ink and yellow and black chalk on off-white wove paper; verso: black ink

Black ink on off-white wove paper

Acrylic, graphite, and computer print-out on off-white wove paper

Metallic colored pencil, graphite, and marker on white wove translucent paper

Black ink, graphite, and yellow chalk on off-white wove paper

Watercolor and graphite on off-white wove paper

Spiral bound sketchbook

Watercolor and white gouache on cream wove paper

Graphite on paper

Ink and collage on paper