Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Elevator cab: plan and elevations (1 1/2" = 1'-0")

Colored crayon on paper

Black ink on heavy off-white wove paper

Graphite on paper

Poster paint on illustration board

Ink and brown pencil on white wove paper

Black crayon on paper

Graphite on white wove paper

Watercolor and charcoal on off-white wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Black ink and charcoal on cream laid paper

Watercolor on off-white wove paper