Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Lower pool in garden: plan and sections (1/2" = 1'-0")

Graphite and gesso on paper

Black ink on slide film, hand colored

Sketchbook with black fabric-covered cardboard covers, held by two metal rings

Graphite on cardboard

Charcoal on off-white laid paper

Graphite on paper

Watercolor over graphite on off-white wove paper

Black ink, graphite, and marker on graph paper

Conté crayon, charcoal, graphite, and collaged paper on white wove paper

Watercolor over graphite on off-white wove paper

Black ink and graphite wash on cream laid paper

Watercolor and graphite on buff wove paper