Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Connectors enclosure detail (full size)

Black ink and black wax crayon on off-white wove paper

Sketchbook with tan paper covers

Graphite and red pencil on ivory laid paper

Watercolor and graphite on heavy off-white wove paper

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

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

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

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Watercolor, pastel and charcoal, with some scoring, on white wove paper

Graphite on dark cream laid paper

Charcoal on off-white laid paper