Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Bracket, wire way, swivel: section and perspective

Graphite on paper

Black ink and charcoal on cream laid paper

Graphite on off-white wove paper

Sketchbook with cardboard backing, heavy paper cover, and spiral wire binding

Watercolor and graphite on white wove paper

Graphite on off-white wove paper

Black marker on graph paper

Graphite on paper

Graphite on translucent vellum paper

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

Album with black cloth-covered cardboard covers, and thirty drawings

Graphite and white chalk on blue laid paper