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

Watercolor and graphite with cut out on paper

Black ink on cream wove paper

Graphite on off-white paper

Graphite on cream wove paper

Cast paper

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Black ink on white wove paper

Watercolor on off-white wove paper

Red and black chalk on heavy off-white wove paper

Watercolor and gouache on paper

Blue crayon and graphite on off-white wove paper