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

Black crayon on paper

Colored ink on plastic

Graphite on paper

Graphite on cream paper, mounted to heavy cardboard (?)

Oil on white primed paper

Black ink over graphite on cream wove paper

Watercolor and graphite on white wove paper

Black ink, gray and white gouache, and scratchwork on cream wove paper; verso: turquoise ink

Graphite on paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Black ink and charcoal on cream laid paper