Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Flower box on first terrace: plan and sections (1 1/2" = 1'-0")

Graphite on off-white wove paper

Charcoal on off-white laid paper

Charcoal on off-white wove paper

Graphite on off-white wove paper

Watercolor and graphite on off-white wove paper

Charcoal on off-white laid paper

Graphite on paper

Graphite on blue-green laid paper

Transparent and opaque watercolor on Japanese paper, mounted overall

Colored crayon on brown wove paper

Graphite on off-white wove paper

Charcoal and watercolor on off-white laid paper