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

Colored pencil on brown wove paper

Watercolor over graphite on cream wove paper

Graphite on oiled buff laid paper

Watercolor and black ink on off-white wove paper

Crayon on discolored cream wove paper

Graphite on paper

Watercolor on cream wove paper

Sketchbook with cardboard covers and spiral wire binding

Colored pencil on paper

Graphite on paper

Black ink on off-white wove paper

Graphite on cream colored paper