Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Lights - roof terrace, third floor: elevation and detail (1/4" and 3" = 1'-0")

Graphite on off-white laid paper

Graphite on thin modern laid paper

Black crayon on paper

Watercolor on off-white wove paper

Graphite on off-white wove paper

Pastel on brown wove paper

Black ink on off-white wove paper

Graphite on paper

Charcoal on brown wove paper, fixed

Charcoal and colored chalks on a ground of rubbed charcoal heavily modeled by erasures, on off-white wove paper, mounted on Kraft paper and wrapped around a strainer

Charcoal on off-white laid paper

Graphite on paper