Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Carpet strip locations: detail (full size)

Black crayon on paper

Watercolor on off-white wove paper from watercolor block

Crayon on paper

Charcoal on off-white laid paper

Black ink on off-white wove paper

Graphite and beeswax on wove paper

Graphite on buff wove paper

Watercolor over graphite on off-white wove paper

Graphite on off-white wove paper

Ink on tracing paper

Graphite on paper

Black ink over graphite on cream laid paper