Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Lighting detail at window head (full size)

Crayon on paper

Graphite on off-white wove paper

Charcoal on off-white laid paper

Watercolor on white Asian paper

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

Graphite on cream wove paper; verso: black ink

Watercolor on gampi paper

Black ink on off-white wove paper

Graphite on paper

Watercolor on ruled off-white wove paper

Black ink, wash and black crayon on tan wove paper; verso: black ink

Graphite on off-white wove paper