Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Shoe boxes in bathrooms: plan, elevations, and section (6" =1'-0")

Charcoal on Ingres charcoal paper

Graphite on off-white wove paper

Watercolor, graphite and colored crayon on off-white wove paper

Black ink over graphite on cream laid paper

Graphite on off-white wove paper

Black ink on cream wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper mounted on buff card

Watercolor over graphite on off-white wove paper

Graphite on off-white wove paper

Watercolor and gouache over graphite on heavy off-white wove paper

Graphite on off-white wove paper; verso: graphite and charcoal