Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Flower box with trellis: plan, elevation, and sections

Watercolor and gouache over graphite on buff laid paper

Sketchbook with cardboard backing, heavy paper cover, and spiral wire binding

Black ink, graphite, and yellow chalk on off-white wove paper

Graphite on off-white wove paper

Watercolor on off-white wove paper

Brown wash and white gouache over graphite on cream wove paper

Brown and red chalk on darkened off-white wove paper

Crayon on paper

Black chalk and black crayon on pink laid paper

Transparent and opaque watercolor with gum arabic

Black and red conté crayon on ivory tracing paper

Pastel, graphite and black ink on tan laid paper