Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Telephone niche in swimming pool: plan, elevation and section (1/2" and 3" = 1'-0")

Watercolor over graphite on off-white wove paper

Pastel on beige wove paper

Graphite on off-white wove paper

Graphite on paper

Graphite on paper

Graphite on paper

Graphite on paper

Graphite on paper

Watercolor on off-white wove paper

Black chalk over red chalk on darkened off-white wove paper

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