Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Interior elevations of swimming pool (1/4" and 1/2" = 1'-0")

Watercolor on off-white wove paper

Graphite, black ink, and yellow chalk on off-white wove paper

Watercolor and white gouache over graphite on off-white wove paper

Graphite on darkened off-white laid paper

Casein, pencil, and crayon on casein ground on off-white wove paper

Black crayon on paper

Graphite and wax crayon on glossy wove paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Black ink, watercolor pencil, and charcoal on cream wove paper

Watercolor and white gouache on buff card

Oil and crayon on cream wove paper