Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Exterior door to roof terrace #308 and flashing details (3" =1"-0" and full size)

Watercolor over graphite on off-white wove paper

Silverpoint on gray wove paper prepared with Chinese white

Gray wash on off-white wove paper

Graphite on paper

Graphite on darkened off-white wove paper

Black ink on off-white wove paper

Watercolor and gouache over graphite on off-white wove paper

Graphite on paper

Charcoal on off-white laid paper

Graphite on off-white tracing paper

Watercolor over graphite on heavy off-white wove paper

Oil on white prepared paper