Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Location of stone retaining walls with cedar screens: plan and sections (1" = 1'-0")

Graphite on off-white wove paper

Black ink on cream wove paper

Oil on tracing paper

Charcoal and graphite on off-white laid paper

Charcoal and graphite on off-white paper

Very dry pen in oilly medium on commercially lined yellow paper

Black ink and charcoal on cream laid paper

Graphite and ink on paper

Black ink and gray wash on cream laid paper

Charcoal on off-white laid paper

Graphite on off-white wove paper

Graphite and ink on paper