Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Upper pool: plan and sections

Black ink and black crayon over graphite on off-white laid paper

Graphite on paper

Black conté crayon on ivory tracing paper

Black crayon on off-white wove paper

Brown ink on off-white wove paper

Graphite on off-white wove paper

Graphite on paper

Watercolor and charcoal? on heavy off-white card

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Black ink and colored chalk on translucent buff wove paper

Graphite on heavy cream wove paper