Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Detail of rear stair (1/2", 1 1/2, and 6" = 1'-0")

Tempera on purple construction paper

Graphite on paper

Graphite on off-white Japanese paper

Graphite on paper

Ink on off-white wove paper

Graphite on paper

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

Graphite on off-white wove paper

Graphite on cream laid paper

Graphite on paper

Watercolor and graphite on layered off-white wove paper

Graphite on cardboard