Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Telephone niche in swimming pool: plan, elevation and section (1/2" and 3" = 1'-0")

Watercolor and graphite on white wove paper

Colored pencil and graphite on gray cardboard

Charcoal on white wove paper

Graphite on off-white wove paper

Acrylic on off-white wove paper

Black ink on off-white wove paper

Watercolor and red ink lines on white wove paper

Black crayon on off-white wove paper

Black conté crayon on buff laid paper

Graphite on darkened off-white wove paper

Graphite on paper

Graphite on paper