Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Layout of equipment in air conditioning room: plan and elevation

Charcoal on off-white laid paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Graphite on paper

Graphite on paper

Graphite on dark cream laid paper

Black ink and charcoal on cream laid paper

Oil and crayon on wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on commercially lined paper

Colored crayon on paper

Collage, watercolor, and lithograph on paper