Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Case in 220: details (1 1/2" = 1'-0" and full size)

Black ink and graphite on translucent vellum paper

Black chalk on off-white laid paper

Graphite on paper

Charcoal on paper

Black ink on off-white wove paper

Graphite on off-white wove paper-

Watercolor on off-white wove paper

Graphite on paper

Black ink on off-white cardboard

Black ink and graphite on off-white wove paper

Graphite on off-white wove paper

Ink on paper