Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pergola - Upper garden: plan and elevations (1/2" = 1'-0")

Watercolor [and gray wash?] and graphite on off-white wove paper

Charcoal, black pastel and blue chalk on white wove paper

Colored crayon on black wove paper

Collage (paper and metallic foil) on handmade paper

Black crayon and ink on paper; black crayon on paper

Black ink on off-white wove paper

Pastel on two sheets of black wove paper

Graphite on cream wove paper

Watercolor

Red chalk on off-white wove paper

Pastel on cardboard

Watercolor and graphite on cream wove paper