Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Railing connections to building (full size)

Graphite on off-white wove paper

Transparent and opaque watercolor on cream wove paper

Gray wash on off-white wove paper

Graphite on cream wove paper

Black ink and graphite on cream wove paper; verso: graphite, black ink, watercolor

Graphite on cream wove paper

Graphite and white gouache on blue laid paper

Graphite on off-white wove tracing paper

Black ink on cream wove paper

Metalpoint on white prepared paper

Ink and brown pencil on white wove paper

Graphite and white chalk on gray laid paper