Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Ground floor plan and sections (1/4" = 1'-0")

Black ink on off-white wove paper

Crayon on discolored cream wove paper

Graphite on paper

Charcoal on off-white wove paper; verso: graphite

Graphite on off-white wove paper

Graphite on paper

Black ink on off-white wove paper

Transparent and opaque watercolor and charcoal on gray wove paper

Black ink and white gouache on thin off-white laid paper

Black, blue and brown crayon on paper

Black chalk on cream wove paper

Watercolor on off-white wove paper