Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Flower box with trellis: plan, elevation, and sections

Black crayon on off-white wove paper

Silverpoint on gesso panel

Charcoal on off-white wove paper

Charcoal on off-white wove paper

Off-white card

Black marker on graph paper

Charcoal and graphite on vellum tracing paper

Black ink on cream wove paper

Black ink, graphite, and yellow chalk on off-white wove paper

Colored pencil and graphite on graph paper

Ink, marker, colored pencil and graphite on Strathmore folded in half

Watercolor over graphite on illustration board