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

Black ink and colored chalk on translucent buff wove paper

Black ink on off-white wove paper

Graphite on off-white wove paper

Charcoal and watercolor with white crayon on off-white wove paper

Pastel on paper

Black ink and graphite on off-white wove paper

Black ink on tan wove paper

Graphite on off-white wove paper

Black ink over graphite on cream board

Black chalk on off-white laid paper

Watercolor over graphite on off-white illustration board

Black and white chalk on darkened buff laid paper