Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Workshop #04: plan and elevations (1/2" = 1'-0")

Graphite and white chalk on blue laid paper

Watercolor and graphite on cream wove paper

Graphite on off-white wove paper

Ink on cardboard

Watercolor over graphite on buff wove paper

Gouache

Black ink on cream wove paper

Ink

Graphite on off-white wove paper

Gouache on white wove paper

Opaque watercolor over graphite on tan illustration board, prepared with white ground

Watercolor on off-white wove paper