Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Exterior flood lights (1 1/2" = 1'-0" and full size)

Graphite on paper

Colored marker on graph paper

Black ink on cream wove paper

Charcoal and black ink on cream laid paper

Graphite on off-white wove paper

Blue and white colored pencil on tracing paper

Black ink on off-white wove paper

Watercolor over graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Graphite on cream wove paper

Blue ink on paper

Graphite on translucent vellum paper, the reverse printed with a grid