Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Step light, first floor outlet #98: details (full size)

Black ink on cream wove paper

Charcoal, white pencil, red watercolor (or ink) on off-white wove paper

Black ink on illustration board

Black ink on off-white wove paper

Black ink on cream wove paper

Crayon on paper

Graphite on blue wove paper

Graphite on off-white wove paper

Pink and black ink, gray wash, and white gouache on off-white wove paper

Gray wash on faded blue-gray wove paper, mounted to cardboard

Graphite on blue wove paper

Graphite on paper