Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Connector enclosures, second and third floors: details (1/2" = 1'0")

Incised line and Aquarelle on white wove paper

Black ink and vermilion stamp on Japanese paper

Graphite and blue colored pencil on cream colored paper

Charcoal on heavy off-white wove paper, mounted to another sheet

Graphite on cream laid paper

Black and blue ink on off-white wove paper

Charcoal on off-white laid paper

Graphite on buff wove paper

Watercolor over graphite on cream wove paper

Graphite and gesso on paper

Black ink and tempera on off-white paper, mounted overall to tan-paper-covered gray board

Charcoal on off-white laid paper