Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Radiator schedule and piping diagram: isometric

Graphite and white pastel on gray wove paper

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

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

Graphite on paper

Mixed media on paper

Colored crayon on thin off-white wove paper

Black ink on off-white wove paper

Red, brown, black and white conté crayon on ivory tracing paper

Black ink and gray wash on buff wove paper

Beeswax, graphite, detritus and debris on wove paper

Gray wash over graphite on off-white wove paper

Graphite and ink on paper