Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Study and bedroom chimney details (1/4" = 1'0")

Black ink and black wax crayon on off-white wove paper

Graphite on paper

Black ink and graphite on off-white wove paper

Charcoal on off-white laid paper

Black ink and gray wash on cream laid paper

Black ink on off-white wove paper

Sketchbook with beige cloth-covered cardboard covers

Charcoal on off-white laid paper

Watercolor and graphite on cream wove paper

Graphite on off-white wove paper

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

Graphite and acrylic paint on Arthur M. Sackler Building lobby walls