Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Locations of curtain reflectiors (1/2" = 1'-0")

Black ink on thin off-white wove paper

Charcoal on off-white laid paper

Graphite on off-white wove paper

Graphite on paper

Graphite on brown wove paper

Black ink and graphite on off-white wove paper

Watercolor, black ink, and charcoal on cream modern laid paper, edges taped

Watercolor and white gouache on off-white wove paper

Watercolor over graphite on off-white wove paper

Oil and watercolor on thin off-white wove paper

Sketchbook with gray cardboard covers, held together by white spiral wire

Graphite on paper